Practicing the Bridges in Mathematics Grade 2 Student Book Answer Key Unit 1 Figure the Facts will help students analyze their knowledge of concepts.
Bridges in Mathematics Grade 2 Student Book Answer Key Unit 1 Figure the Facts
Bridges in Mathematics Grade 2 Student Book Unit 1 Module 1 Session 4 Answer Key
Bar Graph
Title ____________
Write 4 observations about your beetle graph. Include a greater than sign > in one observation and a less than sign < in another.
Bridges in Mathematics Grade 2 Student Book Unit 1 Module 2 Session 3 Answer Key
Children on the Train
Ten children are riding on the train. Some of them have pulled down their shade so they can take a nap. Write an equation to show how many children are awake and how many are taking a nap in each picture.
Question 1.
Answer:
Number of children awake = 9.
Explanation:
Number of children riding on the train = 10
Number of children pulled down their shade for nap = 1
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 1
= 9.
Question 2.
Answer:
Number of children awake = 2.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 8.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 8
= 2.
Question 3.
Answer:
Number of children awake = 7.
Explanation:
Number of children riding on the train = 10
Number of children pulled down their shade for nap = 3
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 3
= 7.
Question 4.
Answer:
Number of children awake = 1.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 9.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 9
= 1.
Question 5.
Answer:
Number of children awake = 4.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 6.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 6
= 4.
Question 6.
Answer:
Number of children awake = 8.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 2.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 2
= 8.
Question 7.
Answer:
Number of children awake = 3.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 3.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 7
= 3.
Question 8.
Answer:
Number of children awake = 5.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 5.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 5
= 5.
Question 9.
Answer:
Number of children awake = 6.
Explanation:
Number of children riding on the train = 10.
Number of children pulled down their shade for nap = 4.
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 4
= 6.
Question 10.
Answer:
Number of children awake = 4.
Explanation:
Number of children riding on the train = 10
Number of children pulled down their shade for nap = 6
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 6
= 4.
Question 11.
Answer:
Number of children awake = 5.
Explanation:
Number of children riding on the train = 10
Number of children pulled down their shade for nap = 5
Number of children awake = Number of children riding on the train – Number of children pulled down their shade for nap
= 10 – 5
= 5.
Bridges in Mathematics Grade 2 Student Book Unit 1 Module 2 Session 4 Answer Key
Muddy Windows on the Bus
How many windows are covered by mud? Complete the equations.
Question 1.
Answer:
Number of muddy windows = 8.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 12.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 12
= 8
Question 2.
Answer:
Number of muddy windows = 10.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 10.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 10
= 10.
Question 3.
Answer:
Number of muddy windows = 9.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 11.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 12
= 9.
Question 4.
Answer:
Number of muddy windows = 6.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 14.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 14
= 6.
Question 5.
Answer:
Number of muddy windows = 14.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 6.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 6
= 14.
Question 6.
Answer:
Number of muddy windows = 8.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 12.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 12
= 8.
Question 7.
Answer:
Number of muddy windows = 7.
Explanation:
Total number of windows = 20.
Number of clear windows =Â 13.
Number of muddy windows = Total number of windows – Number of clear windows
= 20 – 13
= 7.
Bridges in Mathematics Grade 2 Student Book Unit 1 Module 3 Session 3 Answer Key
Around the Table
Question 1.
Find three different ways to seat 8 people at the dinner table. Fill in the blanks to show two equations for each way.
a.
Answer:
Explanation:
First equation:
Number of white plates = 4.
Number of black plates = 4.
Total number of plates = Number of white plates + Number of black plates
= 4 + 4
= 8.
Second equation :
Number of round plates = 2.
Number of square plates = 6.
Total number of plates = Number of round plates + Number of square plates
= 2 + 6
= 8.
b.
Answer:
Explanation:
First equation:
Number of white plates = 1.
Number of black plates = 7.
Total number of plates = Â Number of white plates + Number of black plates
= 1 + 7
= 8.
Second equation :
Number of round plates = 3.
Number of square plates = 5.
Total number of plates = Number of round plates + Number of square plates
= 3 + 5
= 8.
c.
Answer:
Explanation:
First equation:
Number of white plates = 5.
Number of black plates = 3.
Total number of plates = Â Number of white plates + Number of black plates
= 5 + 3
= 8.
Second equation :
Number of round plates = 7.
Number of square plates = 1.
Total number of plates = Number of round plates + Number of square plates
= 7 + 1
= 8.
Question 2.
Find three different ways to seat 15 people at the dinner table. Fill in the blanks to
show two equations for each way.
a.
Answer:
Explanation:
First equation:
Number of white plates = 7.
Number of black plates = 8.
Total number of plates = Number of white plates + Number of black plates
= 7 + 8
= 15.
Second equation :
Number of round plates = 5.
Number of square plates = 10.
Total number of plates = Number of round plates + Number of square plates
= 5 + 10
= 15.
b.
Answer:
Explanation:
First equation:
Number of white plates = 3.
Number of black plates = 12.
Total number of plates = Number of white plates + Number of black plates
= 3 + 12
= 15.
Second equation :
Number of round plates = 1.
Number of square plates = 14.
Total number of plates = Number of round plates + Number of square plates
= 1 + 14
= 15.
c.
Answer:
Explanation:
First equation:
Number of white plates = 9.
Number of black plates = 6.
Total number of plates = Number of white plates + Number of black plates
= 9 + 6
= 15.
Second equation :
Number of round plates = 11.
Number of square plates = 4.
Total number of plates = Number of round plates + Number of square plates
= 11 + 4
= 15.
Question 3.
Find three different ways to seat 12 people at the dinner table. Fill in the blanks to show two equations for each way.
a.
Answer:
Explanation:
First equation:
Number of white plates = 6.
Number of black plates = 6.
Total number of plates = Number of white plates + Number of black plates
= 6 + 6
= 12.
Second equation :
Number of round plates = 7.
Number of square plates = 5.
Total number of plates = Number of round plates + Number of square plates
= 7 + 5
= 12.
b.
Answer:
Explanation:
First equation:
Number of white plates = 9.
Number of black plates = 3.
Total number of plates = Number of white plates + Number of black plates
= 9 + 3
= 12.
Second equation :
Number of round plates = 8.
Number of square plates = 4.
Total number of plates = Number of round plates + Number of square plates
= 8 + 4
= 12.
c.
Answer:
Explanation:
First equation:
Number of white plates = 11.
Number of black plates = 1.
Total number of plates = Number of white plates + Number of black plates
= 11 + 1
= 12.
Second equation :
Number of round plates = 2.
Number of square plates = 10.
Total number of plates = Number of round plates + Number of square plates
= 2 + 10
= 12.
Question 4.
Find three different ways to seat 13 people at the dinner table. Fill in the blanks to show two equations for each way.
a.
Answer:
Explanation:
First equation:
Number of white plates = 10.
Number of black plates = 3.
Total number of plates = Number of white plates + Number of black plates
= 10 + 3
= 13.
Second equation :
Number of round plates = 7.
Number of square plates = 6.
Total number of plates = Number of round plates + Number of square plates
= 7 + 6
= 13.
b.
Answer:
Explanation:
First equation:
Number of white plates = 9.
Number of black plates = 4.
Total number of plates = Number of white plates + Number of black plates
= 9 + 4
= 13.
Second equation :
Number of round plates = 8.
Number of square plates = 5.
Total number of plates = Number of round plates + Number of square plates
= 8 + 5
= 13.
c.
Answer:
Explanation:
First equation:
Number of white plates = 12.
Number of black plates = 1.
Total number of plates = Number of white plates + Number of black plates
= 12 + 1
= 13.
Second equation :
Number of round plates = 11.
Number of square plates = 2.
Total number of plates = Number of round plates + Number of square plates
= 11 + 2
= 13.
Question 5.
Find three different ways to seat 11 people at the dinner table. Fill in the blanks to show two equations for each way.
a.
Answer:
Explanation:
First equation:
Number of white plates = 9.
Number of black plates = 2.
Total number of plates = Number of white plates + Number of black plates
= 9 + 2
= 11.
Second equation :
Number of round plates = 10.
Number of square plates = 1.
Total number of plates = Number of round plates + Number of square plates
= 10 + 1
= 11.
b.
Answer:
Explanation:
First equation:
Number of white plates = 3.
Number of black plates = 8.
Total number of plates = Number of white plates + Number of black plates
= 3 + 8
= 11.
Second equation :
Number of round plates = 4.
Number of square plates = 7.
Total number of plates = Number of round plates + Number of square plates
= 4 + 7
= 11.
c.
Answer:
Explanation:
First equation:
Number of white plates = 2.
Number of black plates = 9.
Total number of plates = Number of white plates + Number of black plates
= 2 + 9
= 11.
Second equation :
Number of round plates = 5.
Number of square plates = 6.
Total number of plates = Number of round plates + Number of square plates
= 5 + 6
= 11.
Question 6.
Find three different ways to seat 16 people at the dinner table. Fill in the blanks to show two equations for each way.
a.
Answer:
Explanation:
First equation:
Number of white plates = 8.
Number of black plates = 8.
Total number of plates = Number of white plates + Number of black plates
= 8 + 8
= 16.
Second equation :
Number of round plates = 10.
Number of square plates = 6.
Total number of plates = Number of round plates + Number of square plates
= 10 + 6
= 16.
b.
Answer:
Explanation:
First equation:
Number of white plates = 5.
Number of black plates = 11.
Total number of plates = Number of white plates + Number of black plates
= 5 + 11
= 16.
Second equation :
Number of round plates = 9.
Number of square plates = 7.
Total number of plates = Number of round plates + Number of square plates
= 9 + 7
= 16.
c.
Answer:
Explanation:
First equation:
Number of white plates = 4.
Number of black plates = 12.
Total number of plates = Number of white plates + Number of black plates
= 4 + 12
= 16.
Second equation :
Number of round plates = 3.
Number of square plates = 13.
Total number of plates = Number of round plates + Number of square plates
= 3 + 13
= 16.
Bridges in Mathematics Grade 2 Student Book Unit 1 Module 4 Session 3 Answer Key
Addition Table
Bridges in Mathematics Grade 2 Student Book Unit 1 Module 4 Session 4 Answer Key
Which Strategy?
Question 1.
Put a check in the box next to the strategy you used.
Answer:
Explanation:
a. 7 + 5 = 12. (Add ten)
b. 8 + 4 = 12. (Count on 1,2,3..)
c. 9 + 6 = 15. (Add nine)
d. 6 + 8 = 14. (I just knew it.)
Which Strategy?
Answer:
Explanation:
e. 7 + 4 = 11.(Make ten)
f. 8 + 5 = 13. (Add ten)
g. 4 + 9 = 13. (Make ten)
h. 7 + 6 = 13. (Double plus or minus one)
i. 3 + 5 = 9. (Count on 1,2,3..)
Which Strategy?
Answer:
Explanation:
j. 9 + 2 = 11. (Add nine)
k. 8 + 0 = 8. (Add zero)
l. 6 + 4 = 10. (Count on 1,2,3..)
Question 2.
Find each sum.
5 + 5 = ____ 6 + 8 = ____ 1 + 7 = ____ 7 + 3 = ____
8 + 7 = ____ 2 + 9 = ____ 7 + 4 = ____ 3 + 8 = ____
Answer:
Addition:
5 + 5 = 10.        6 + 8 = 14.      1 + 7 = 8.        7 + 3 = 10.
8 + 7 = 15.        2 + 9 = 11.      7 + 4 = 11.       3 + 8 = 11.
Explanation:
Equation Given:
Sum:
5 + 5 = 10.
6 + 8 = 14.
1 +7 = 8.
7 + 3 = 10.
8 + 7 = 15.
2 + 9 = 11.
7 + 4 = 11.
3 + 8 = 11.