-10
-20
-30
-40
Number Stories
100
20-10=?
10
100

40-20=?

20

100

60-30=?

30

100
50-40=?
10
100

Sam had 40 stickers. He gave away 10. How many stickers does Sam have now?

30 stickers

200
32-10=?
22
200
43-20=?
23
200
52-30=? 
22
200
64-40=?
24
200

Lily had 86 apples. She shared 20 with friends. How many apples are left?

66 apples

300
53-10=?
43
300
65-20=?
45
300
65-30=?
35
300
67-40=?
27
300

William had 59 toy cars. He gave 30 to his cousin. How many does he have now? Show a drawing or number line.

29 toy cars

400
66-10=?
56
400
72-20=?
52
400
77-30=?
47
400
76-40=?
36
400

A farmer has 74 pumpkins. He sold 40. How many pumpkins remain? Explain using tens and ones.

34 pumpkins

500
89-10=?
79
500
87-20=?
67
500
89-30=?
59
500
88-40=?
48
500

There are 98 students in a school play audience. 50 students leave early. How many students stay? Show your thinking with a drawing or number line.

48 students

M
e
n
u