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Bridges in Mathematics Grade 1 Home Connections Answer Key Unit 1 Module 2
Bridges in Mathematics Grade 1 Home Connections Unit 1 Module 2 Session 2 Answer Key
Ten Ladybugs
Look at the pictures of the gray and white ladybugs below. It looks like they are making a number rack! Fill in the correct number in the empty box to make the equation true.
Question 1.
Answer:
Explanation:
Number of black ladybugs = 6.
Number of white ladybugs = 4.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 6 + 4
= 10.
Equation:
9 + ?? = 10.
=> ?? = 10 – 9
=> ?? = 1.
Question 2.
Answer:
Explanation:
Number of black ladybugs= 7.
Number of white ladybugs= 3.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 7 + 3
= 10.
Equation:
8 + ?? = 10.
=> ?? = 10 – 8
=> ?? = 2.
Question 3.
Answer:
Explanation:
Number of black ladybugs = 8.
Number of white ladybugs = 2.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 8 + 2
= 10.
Equation:
7 + ?? = 10.
=> ?? = 10 – 7
=> ?? = 3.
Question 4.
Answer:
Explanation:
Number of black ladybugs = 9.
Number of white ladybugs = 1.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 9 + 1
= 10.
Equation:
6 + ?? = 10.
=> ?? = 10 – 6
=> ?? = 4.
Question 5.
Answer:
Explanation:
Number of black ladybugs = 6.
Total number of ladybugs = Number of black ladybugs
= 10.
Equation:
5 + ?? = 10.
=> ?? = 10 – 5
=> ?? = 5.
Question 6.
Answer:
Explanation:
Number of black ladybugs = 9.
Number of white ladybugs = 1.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 9 + 1
= 10.
Equation:
4 + ?? = 10.
=> ?? = 10 – 4
=> ?? = 6.
Question 7.
Answer:
Explanation:
Number of black ladybugs = 8.
Number of white ladybugs = 2.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 8 + 2
= 10.
Equation:
3 + ?? = 10.
=> ?? = 10 – 3
=> ?? = 7.
Question 8.
Answer:
Explanation:
Number of black ladybugs = 7.
Number of white ladybugs = 3.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 7 + 3
= 10.
Equation:
2 + ?? = 10.
=> ?? = 10 – 2
=> ?? = 8.
Question 9.
Answer:
Explanation:
Number of black ladybugs = 6.
Number of white ladybugs = 4.
Total number of ladybugs = Number of black ladybugs + Number of white ladybugs
= 6 + 4
= 10.
Equation:
1 + ?? = 10.
=> ?? = 10 – 1
=> ?? = 9.
Look at this number rack. It has one row of 10 beads. How many beads are under the cover?
Question 10.
Answer:
Explanation:
Total number of beads = 10.
Number of beads are seen = 5.
Number of beads are covered = Total number of beads – Number of beads are seen
= 10 – 5
= 5.
Question 11.
Answer:
Explanation:
Total number of beads = 10.
Number of black beads = 5.
Number of white beads = 1.
Number of beads are covered = Total number of beads – (Number of black beads + Number of white beads)
= 10 – (5 + 1)
= 10 – 6
= 4.
Question 12.
Answer:
Explanation:
Total number of beads = 10.
Number of black beads = 5.
Number of white beads = 3.
Number of beads are covered = Total number of beads – (Number of black beads + Number of white beads)
= 10 – (5 + 3)
= 10 – 8
= 2..
Question 13.
Answer:
Explanation:
Total number of beads = 10.
Number of beads are seen = 2.
Number of beads are covered = Total number of beads – Number of beads are seen
= 10 – 2
= 8.
Question 14.
Answer:
Explanation:
Total number of beads = 10.
Number of black beads = 5.
Number of white beads = 2.
Number of beads are covered = Total number of beads – (Number of black beads + Number of white beads)
= 10 – (5 + 2)
= 10 – 7
= 3.
Question 15.
Answer:
Explanation:
Total number of beads = 10.
Number of beads are seen = 4.
Number of beads are covered = Total number of beads – Number of beads are seen
= 10 – 4
= 6.
Question 16.
Answer:
Explanation:
Total number of beads = 10.
Number of beads are seen = 1.
Number of beads are covered = Total number of beads – Number of beads are seen
= 10 – 1
= 9.
Question 17.
Answer:
Explanation:
Total number of beads = 10.
Number of beads are seen = 3.
Number of beads are covered = Total number of beads – Number of beads are seen
= 10 – 3
= 7.
Question 18.
Answer:
Explanation:
Total number of beads = 10.
Number of black beads = 5.
Number of white beads = 4.
Number of beads are covered = Total number of beads – (Number of black beads + Number of white beads)
= 10 – (5 + 4)
= 10 – 9
= 1.
Question 19.
Answer:
Explanation:
Number of black beads = 5.
Number of white beads = 5.
Total number of beads = Number of black beads – Number of white beads
= 5 + 5
= 10.
Bridges in Mathematics Grade 1 Home Connections Unit 1 Module 2 Session 5 Answer Key
Changes, Changes
Fill in the missing number.
Question 1.
Answer:
Number of dots I added = 3.
Explanation:
Number of dots I started with = 5.
Number of dots I finished with = 8.
Number of dots I added = Number of dots I finished with – Number of dots I started with
= 8 – 5
= 3.
Question 2.
Answer:
Number of dots I added = 6.
Explanation:
Number of dots I started with = 2.
Number of dots I finished with = 8.
Number of dots I added = Number of dots I finished with – Number of dots I started with
= 8 – 2
= 6.
Question 3.
Answer:
Number of dots I take away = 4.
Explanation:
Number of dots I started with = 9.
Number of dots I finished with = 5.
Number of dots I take away = Number of dots I started with – Number of dots I finished with
= 9 – 5
= 4.
Question 4.
Answer:
Number of dots I added = 5.
Explanation:
Number of dots I started with = 4.
Number of dots I finished with = 9.
Number of dots I added = Number of dots I finished with – Number of dots I started with
= 9 – 4
= 5.
Question 5.
Answer:
Number of dots I added = 5.
Explanation:
Number of dots I started with = 2.
Number of dots I finished with = 7.
Number of dots I added = Number of dots I finished with – Number of dots I started with
= 7 – 2
= 5.
Question 6.
Answer:
Number of dots I take away = 5.
Explanation:
Number of dots I started with = 8.
Number of dots I finished with = 3.
Number of dots I take away = Number of dots I started with – Number of dots I finished with
= 8 – 3
= 5.
Question 7.
Answer:
Number of dots I have now = 7.
Explanation:
Number of dots I started with = 3.
Number of dots I finished more = 4.
Number of dots I have now = Number of dots I started with + Number of dots I finished more
= 3 + 4
= 7.
Question 8.
Answer:
Number of dots I finished with = 5.
Explanation:
Number of dots I started with = ??.
Number of dots I finished with = 8.
Number of dots I added = 3.
Number of dots I finished with = Number of dots I added + Number of dots I started with
=> 8 = 3 + ??
=> 8 – 3 = ??
=> 5 = ??