Practicing the Bridges in Mathematics Grade 2 Home Connection Answer Key Unit 2 Module 1 will help students analyze their knowledge of concepts.
Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 2 Module 1
Bridges in Mathematics Grade 2 Home Connections Unit 2 Module 1 Session 1 Answer Key
These Beans Have Got To Go!
Note to Families
Winning is not just a matter of luck in this game where players take turns spinning and adding. Certain sums are going to come up more often than others. It is easier to spin a total of 7 than a total of 2, for instance, simply because there are more combinations for 7 on the spinners. You can get a 7 by spinning 1 + 6 or 2 + 5 or 3 + 4. The only way to get a 2 is by spinning 1 + 1. Your child will probably want to place a bean on every number “just to be safe,” but will learn through experience that the middle numbers usually come up more often. The second part of the assignment will help them find out why.
Materials
- These Beans Have Got To Go! pages 1-4
- 24 game pieces, 12 each in 2 different colors (e.g., 12 lima and 12 pinto beans,
12 red and 12 white buttons, 12 pennies and 12 dimes, 12 red and 12 yellow Legos) - paperclip and pencil for spinner
- crayons or colored pencils
Instructions
1. Each player should place his or her beans on the game board (page 2). Note You can place more than 1 bean on a particular number.
2. Players take turns spinning two numbers, adding them, and removing a game piece.
- The first player spins both spinners and adds the two numbers.
- If the player has any beans on that total, she can remove one bean from that section of the board. Her turn is over.
- If there are no beans on that total, the player’s turn is over.
3. Continue playing until one player moves all the beans from his or her board. This player is the winner.
4. Play the game several times and talk about ideas that would help someone win. (Hint: You might want to do pages 3 and 4 of this assignment first.)
These Beans Have Got To Go!
Are you wondering why the middle numbers keep winning on the game you just played? Fill in the sums on the addition table shown below and follow the instructions for coloring them in—you might begin to see why it’s a better idea to put your beans on the 6 and the 7 instead of the 2 and the 12.
Color in the table using the rules below.
- 6s red
- 7s orange
- 8s yellow
Question 3.
These Beans Have Got To Go! page 4 of 4 3 Which sums came up the most often on the addition table?
Answer:
The sums 6, 7, and 8 came up the most on the addition table.
Question 4.
Which came up the least often on the addition table?
Answer:
12 came up the least often on the addition table.
Question 5.
Why do you think it worked this way?
Answer:
Middle Numbers come up more often compared to others. This will be learned over time as there are more combinations for 7 on the spinners. You can get a 7 by spinning 1 + 6 or 2 + 5 or 3 + 4. The only way to get a 2 is by spinning 1 + 1.
Bridges in Mathematics Grade 2 Home Connections Unit 2 Module 1 Session 3 Answer Key
Tens, Dollars & Quarters
Question 1.
Circle the two numbers in each box that add up to 10.
ex
a.
Answer:
When 6 and 4 are added , it generates the value 10. so, Circle the two numbers 6 and 4 which are as shown below.
b.
Answer:
When 7 and 3 are added , it generates the value 10. so, Circle the two numbers 7 and 3 which are as shown below.
c.
Answer:
When 2 and 8 are added , it generates the value 10. so, Circle the two numbers 2 and 8 which are as shown below.
Question 2.
Write two addition equations and two subtraction equations to match each ten-frame.
ex
a.
Answer:
Total Number of circles = 10
Number of shaded circles = 8
Number of non – shaded circles = 2
Therefore the two addition and subtraction Equations are as shown below
8 + 2 = 10Â Â 10 – 8 = 2
2 + 8 = 10Â Â 10 – 2 = 8
b.
Answer:
Total Number of circles = 10
Number of shaded circles = 3
Number of non – shaded circles = 7
Therefore the two addition and subtraction Equations are as shown below
3 + 7 = 10Â Â Â Â Â Â 10 – 3 = 7
7 + 3 = 10Â Â Â Â Â Â 10 – 7 = 3
c.
Answer:
Total Number of circles = 10
Number of shaded circles = 9
Number of non – shaded circles = 1
Therefore the two addition and subtraction Equations are as shown below
9 + 1 = 10Â Â Â Â 10 – 1 = 9
1 + 9 = 10Â Â Â Â 10 – 9 = 1
Question 3.
Find each difference.
Answer:
Question 4.
Fill in the missing numbers.
3 + _____ = 10 _____ + 5 = 10 4 + 6 = _____ 9 + _____ = 10
10 = 7 + ____ 10 = 8 + ____ 6 + ____ = 10 1 + 4 + 5 = ____
Answer:
Subtract 3 from 10 and get the result as 7.Then place 7 in the given missing blank.
Subtract 5 from 10 and get the result as 5.Then place 5 in the given missing blank.
Add 4, 6 and get the result as 10.Then place 10 in the given missing blank.
Subtract 9 from 10 and get the result as 1.Then place 1 in the given missing blank.
Subtract 7 from 10 and get the result as 3.Then place 3 in the given missing blank.
Subtract 8 from 10 and get the result as 2.Then place 2 in the given missing blank.
Subtract 6 from 10 and get the result as 4.Then place 4 in the given missing blank.
Add 1 , 4 and 5 and get the result as 10.Then place 10 in the given missing blank.
3 + 7 = 10Â Â 5+ 5 = 10Â Â 4 + 6 = 10 9 + 1 = 10
10 = 7 + 3 10 = 8 + 2Â 6 + 4 = 10 1 + 4 + 5 = 10
Question 5.
Jana has 7 dollars. How many more dollars does she need to have 14 dollars in all? Show your work.
Jana needs ____ dollars.
Answer:
Number of dollars that Jana = 7
Number of total dollars that Jana required to have = 14
Number of more dollars need to have = ?
= 14 – 7
= 7
Jana needs 7 dollars.
Question 6.
CHALLENGE Timmy has 7 dollars. How many more quarters does he need to have 12 dollars in all? Show your work.
Timmy needs ___ more quarters.
Answer:
Number of dollars that Timmy contain = 7
Number of total dollars required to have = 12
Number of more Quarter dollars = ?
= 12 – 7
= 5 Dollars.
Bridges in Mathematics Grade 2 Home Connections Unit 2 Module 1 Session 5 Answer Key
Cubes & Tens
Question 1.
Write a number to show how many tens and ones are in each box below.
Answer:
Count the number of tens and ones. Then , place the number in the given boxes which are as shown below.
Question 2.
Fill in the missing numbers on the number line below.
Answer:
The scale is with a difference of 5 starting from 0 t0 70 and the missing numbers on the number line as shown below.
Question 3.
Find each sum.
Answer:
Add the given following combinations and place the result which are as shown below.
Question 4.
Write an equation to match each cube train.
ex
a.
Answer:
Total cubes in a given train = 10
Number of shaded cubes = 3
Number of non – shaded cubes = 7
Therefore the Equation for a cube train : 10 – 3 = 7
b.
Answer:
Total cubes in a given train = 10
Number of shaded cubes = 4
Number of non – shaded cubes = 6
Therefore the Equation for a cube train : 10 – 4 = 6
c.
Answer:
Total cubes in a given train = 10
Number of shaded cubes = 8
Number of shaded cubes = 2
Therefore the Equation for a cube train : 10 – 8 = 2
Question 5.
Color in the cube train to match the equation.
ex 6 + 4 = 10
a.
8 + 2 =
Answer:
Color the eight cubes with a gray color and Leave the remaining two cubes as empty and add both the values which
gives the result as 10.
b.
3 + 7 =
Answer:
Color the three cubes with a gray color and Leave the remaining two cubes as empty and add both the values which
gives the result as 10.
c.
1 + 2 + 3 + 4 = 10
Answer:
Color the given cubes with the three different colors and Leave the remaining four cubes as empty and add both the values which gives the result as 10.
Question 6.
Find each difference.
10 – 0 = ____ 10 – 3 = ____ 10 – 9 = ____ 10 – 2 = ____
10 – 4 = ____ 10 – 1 = ____ 10 – 5 = ____ 10 – 8 = ____
9 – 4 = ____ 10 – 6 = ____ 10 – 7 = ____ 10 – 10 = ____
Answer:
Subtract 0 from 10 and get the result as 10.Then place 10 in the given missing blank.
Subtract 3 from 10 and get the result as 7.Then place 7 in the given missing blank.
Subtract 9 from 10 and get the result as 1.Then place 1 in the given missing blank.
Subtract 2 from 10 and get the result as 8.Then place 8 in the given missing blank.
Subtract 4 from 10 and get the result as 6.Then place 6 in the given missing blank.
Subtract 1 from 10 and get the result as 9.Then place 9 in the given missing blank.
Subtract 5 from 10 and get the result as 5.Then place 5 in the given missing blank.
Subtract 8 from 10 and get the result as 2.Then place 2 in the given missing blank.
Subtract 4 from 10 and get the result as 6.Then place 6 in the given missing blank.
Subtract 4 from 10 and get the result as 6.Then place 6 in the given missing blank.
Subtract 7 from 10 and get the result as 3.Then place 3 in the given missing blank.
Subtract 10 from 10 and get the result as 0.Then place 0 in the given missing blank.
10 – 0 = 10 10 – 3 = 7 10 – 9 = 1 10 – 2 = 8
10 – 4 = 6 10 – 1 = 9 10 – 5 = 5 10 – 8 = 2
9 – 4 = 5 10 – 6 = 4 10 – 7 = 3 10 – 10 = 0
Question 7.
Fill in the missing numbers.
5 + ____ = 10 ______ + 7 = 10 10 = 6 + ____ 10 = 1 + ____
Answer:
Subtract 5 from 10 and get the result as 5.Then place 5 in the given missing blank.
Subtract 7 from 10 and get the result as 3.Then place 3 in the given missing blank.
Subtract 6 from 10 and get the result as 4.Then place 4 in the given missing blank.
Subtract 1 from 10 and get the result as 9.Then place 9 in the given missing blank.
5 + 5 = 10Â Â 3 + 7 = 10Â Â 10 = 6 + 4Â Â 10 = 1 + 9