Math 1A Workbook Exercise 14-16 Singapore Part 3
1A Workbook Exercise 14-16
Exercise 14
1. Tell a
story for each picture. Then complete the number sentence.
(a) 🎈.🎈.🎈.🎈.🎈.🎈.🎈.🎈.
🎈.
⬜ + ⬜ = 9.
(b) 🐇.🐇.🐇. 🐇.🐇.🐇.🐇.🐇.
⬜ + ⬜ = 8.
(c) 🐟.🐟.🐟.🐟.🐟.🐟. 🐟.
⬜ + ⬜ = 7.
(d) 🌹.🌹.🌹.🌹.🌹.🌹.🌹. 🌹.🌹.
⬜ + ⬜ = 10.
Solution:
(a) Story: There are 8 balloons. Add 1 more. There are 9 balloons
altogether.
Number Sentence: 8 + 1 = 9.
(b) Story: There are 3 rabbits. Add 5 more. There are 8 rabbits
altogether.
Number Sentence: 3 + 5 = 8.
(c) Story: There are 6 fishes. Add 1 more. There are 7 fishes
altogether.
Number Sentence: 6 + 1 = 7.
(d) There are 7 roses. Add 3 more.
There are 10 roses altogether.
Number Sentence: 7 + 3 = 10.
2.
Tell two different stories for each picture. Then complete the number
sentences.
⬜ + ⬜ = 8.
⬜ + ⬜ = 8.
⬜ + ⬜ = 6.
⬜ + ⬜ = 6.
Solution:
(a) Story 1: There are 5 cakes. Add 3 more. There are 8 cakes
altogether.
Story 2: Joli makes 3 cakes. Micle makes 5 cakes. There are 8 cakes
altogether.
Number Sentences:
5 + 3 = 8.
3 + 5 = 8.
(b) Story 1: There are 4 children. 2 more join them. There are 6
children altogether.
Story 2: There are 5 girls
and 1 boy. There are 6 children altogether.
Number Sentences:
4 + 2 = 6.
5 + 1 = 6.
3. Write
an addition sentence for each picture (below picture).
|
(a)
|
🍏.🍏.
🍏.
|
🍏.
🍏.
|
|
(b)
|
🍐.🍐.
🍐.
|
🍐.🍐.
🍐.
|
|
(c)
|
🥭.
🥭.
|
🥭.🥭.🥭.
🥭.🥭.
|
|
(d)
|
🍍.🍍.🍍.
🍍.🍍.
|
🍍.🍍.
🍍.🍍.
|
Solution:
(a) 3 + 2 = 5.
(b) 3 + 3 = 6.
(c) 2 + 5 = 7.
(d) 5 + 4 = 9.
Exercise 15
1.
Fill in the missing numbers.
(a)
6 + 2 = ⬜.
↗⬜
(b)
1 + 5 = ⬜.
↗⬜
(c)
3 + 7 = ⬜.
↗⬜
(d)
2 + 3 = ⬜.
↗⬜
Solution:
(a)
6 + 2 = 8.
↗ 6
(b)
1 + 5 = 6.
↗ 1
(c)
3 + 7 = 10.
↗ 3
(d)
2 + 3 = 5.
↗ 2
2.
Add
4 +
5 = ___. 4 + 3 = ___.
4 +
2 = ___. 5 + 3 = ___.
6 +
3 = ___. 4 + 6 = ___.
Solution:
4 + 5 = 9.
4 + 3 = 7.
4 +
2 = 6. 5 + 3 = 8.
6 +
3 = 9. 4 + 6 = 10.
3.
Color the flowers that match each big number.
Solution: (follow the below picture)
Exercise 16
1. 👫.👫. 👫.👫.
How
many children are there altogether?
4 +
4 = ⬜.
There are ⬜ children altogether.
Solution:
4 + 4 = 8.
There are 8
children altogether.
2. ⚽.⚽.⚽.⚽.⚽.⚽.⚽.⚽. ⚽.
How many balls are there altogether?
8 + 1 = ⬜.
There are ⬜ balls altogether.
Solution:
8 + 1 = 9.
There are 9 balls
altogether.
3. 👒.👒.👒.👒.👒.👒.
👒.👒.
How many hats are
there altogether?
6 +
2 = ⬜.
There are ⬜ hats altogether.
Solution:
6 + 2 = 8.
There
are 8 hats altogether.
4. 📗.📗.📗.📗. 📗.📗.📗.
How many books are
there on the shelf?
5 + 3 = ⬜.
There are ⬜ books on
the shelf.
Solution:
5 + 3 = 8.