Math 1A Singapore–Number Bonds-Making Number Stories–Chapter 2

Making Number Stories

A. Making Number Stories

a. There are 5 penguins. 2 are swimming. 3 are not swimming.

Solution:

Number Story:

  5→Whole 

 ↙↘

3   2→ Part

🠗   

Part

Make up other stories of 5 (five) about the penguins.

Solution:

Number story 1:

  5

 ↙↘

2   3

Number story 2:

  5

 ↙↘

4   1

1. Make up as many stories as you can about the 6 (six) children.

Solution:

Number story 1:

  6

 ↙↘

1   5

Number story 2:

  6

 ↙↘

2   4

Number story 3:

  6

 ↙↘

3   3

2. Find other pairs of numbers that make 6 (six).

Solution:

Number story 4:

  6

 ↙↘

4   2

So, 4 and 2 make 6.

Number story 5:

  6

 ↙↘

5   1

So, 5 and 1 make 6.

3. Make up as many stories as you can about the 7 (seven) balloons.

Solution:

Number story 1:

  7

 ↙↘

1   6

Number story 2:

  7

 ↙↘

2   5

Number story 3:

  7

 ↙↘

3   4

4. Find other pairs of numbers that make 7 (seven).

Solution:

Number story 1:

  7

 ↙↘

4   3

4 and 3 make 7.

Number story 2:

  7

 ↙↘

5   2

5 and 2 make 7.

Number story 3:

  7

 ↙↘

6   1

6 and 1 make 7.

5.

(a) Make up a story of 8 (eight) from the picture.

(b) Tell other stories of 8 (eight).

🐇 🐇 🐇

🐇 🐇 🐇 🐇 🐇

Solution:

Number story:

  8

 ↙↘

3   5

6. Find other pairs of numbers that make 8 (eight).

Solution:

Given Pairs:

4 and 4 make 8.

  8

 ↙↘

4   4

Other Pairs:

2 and 6 make 8.

  8

 ↙↘

2   6

3 and 5 make 8.

  8

 ↙↘

3   5

1 and 7 make 8.

  8

 ↙↘

1   7

5 and 3 make 8.

  8

 ↙↘

5   3

6 and 2 make 8.

  8

 ↙↘

6   2

7 and 1 make 8.

  8

 ↙↘

7   1

7. Find other pairs of numbers that make 9 (nine).

7 and 2 make 9

  9

 ↙↘

7   2

Solution:

Other pairs:

8 and 1 make 9.

  9

 ↙↘

8   1

6 and 3 make 9.

  9

 ↙↘

6   3

5 and 4 make 9.

  9

 ↙↘

5   4

4 and 5 make 9.

  9

 ↙↘

4   5

3 and 6 make 9.

  9

 ↙↘

3   6

2 and 7 make 9.

  9

 ↙↘

2   7

1 and 8 make 9.

  9

 ↙↘

1   8

8. Find other pairs of numbers that make 10 (ten).

4 and 6 make 10

 10

 ↙↘

4   6

Solution:

Other pairs:

1 and 9 make 10.

 10

 ↙↘

1   9

2 and 8 make 10.

 10

 ↙↘

2   8

3 and 7 make 10.

 10

 ↙↘

3   7

5 and 5 make 10.

 10

 ↙↘

5   5

6 and 4 make 10.

 10

 ↙↘

6   4

7 and 3 make 10.

 10

 ↙↘

7   3

8 and 2 make 10.

 10

 ↙↘

8   2

9 and 1 make 10.

 10

 ↙↘

9   1

9. What are the missing numbers?

(a)

  7

 ↙↘

5  ⬚

Answer: 2

(b)

  8

 ↙↘

⬚  2

Answer: 6

(c)

  5

 ↙↘

5   ⬚

Answer: 0

(d)

  4

 ↙↘

2   ⬚

Answer: 2

(e)

  ⬚

 ↙↘

2   1

Answer: 3

(f)

  ⬚

 ↙↘

4   2

Answer: 6

(g)

  ⬚

 ↙↘

5   4

Answer: 9

10. 6 and ⬚ make 10.

Answer:

6 and 4 make 10.

11. Play with a friend.

Make 2 (two) sets of cards numbered 0 to 10:

Solutions:

0. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

10. 9. 8. 7. 6. 5. 4. 3. 2. 1. 0.

Use the cards to make as many tens (10) as you can.

Solution:

7 and 3 make 10.

 10

 ↙↘

7   3

8 and 2 make 10.

 10

 ↙↘

8   2

9 and 1 make 10.

 10

 ↙↘

9   1