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WorksheetsFact Families & 10 more/10 less
Total questions: 51
Worksheet time: 37mins
If 20 + 0 = 20, then 20 - 20 =
(a)
If 13 - 2 = 11, then 11 + (a) = 13
If 7 + 7 = 14, then 14 - 7 =
(a)
If 14 - 1 = 13, then (a) + 1 = 14
If 7 + 8 = 15, then 15 - (a) = 8
If 8 + 7 = 15, then (a) - 7 = 8
If 15 - 4 = 11, then (a) - 4 = 11
If 9 + 7 = 16, then 16 - (a) = 7
If 10 + 7 = 17, then 17 - (a) =10
If 12 + 4 = 16, then 16 - 4 = (a)
If 18 - 9 = 9 then 9 + (a) = 18
If 18 - 9 = 9, then 9 + 9 =
(a)
If 14 + 4 = 18, then 18 - (a) = 14
If 18 - 5 = 13, then (a) +13= 18
If 12 + 7 = 19. then (a) -7 = 12
If 19 - 6 = 13, then 13 + (a) = 19
15 + 4 = 19, then 19 - 4 = ?
(a)
If 19 - 8 = 11, then (a) + 8 = 19
If 15 + 5 = 20, then (a) - 5 = 15
If 20 - 16 = 4, then 16 + (a) = 20
If 20 - 18 = 2, then 2 + (a) = 20
If 11 + 9 = 20, then (a) - 9 = 11
If 20 - 20 = 0, then 0 + (a) = 20
If 11 + 0 = 11, then 11 - 0 = (a)
If 25 + 25 = 50, then 50 - 25 = (a)
If 25 + 25 = 50, then 50 - (a) = 25
If 29 + 10 = 39, then 39 - (a) = 10
If 47 + 12 = 59, then 59 - 12 = (a)
If 63 - 9 = 54, then 54 + (a) = 63
If 71 - 20 = 51, then (a) + 20 = 71
If 26 + 30 = 56, then 56 - (a) = 30
If 26 + 30 = 50 + 6, then 56 = (a) + 6
If 15 + 60 = 75, then 75 - 15 = (a)
Angel picks 20 apples. Bella picks 35 apples. How many apples altogether?
37
45
55
72
Select each problem that has the same total as 20 + 18.
18 + 20
20 + 10 + 8
28 + 10
10 + 10 + 8
Select each problem that has the same total as 30 + 12
20 + 22
10 + 10 + 10 + 10 + 2
10 + 32
10 + 22
3 + 10 + 12
Select each problem that has the same total as 26 + 26
10 + 10 + 26
10 + 16+ 26
20 + 20 + 6 + 6
26 + 10 + 6
26 + 10 + 16
There are 80 seats. 50 seats are taken.
The rest are empty.
How many seats are empty?
80 + 50 = 130
80 - 50 = 30
50 + 80 = 130
50 - 80 = 30
There are 50 children. 20 takes the bus.
The rest walk.
How many children walk?
50 - 20 = 30
50 + 20 = 70
20 - 50 = 40
20 + 50 = 70
What is 10 less than 57?
75
67
57
56
What is 10 less than 32?
31
42
22
33
What is 20 more than 31?
41
33
11
51
What is 40 more than 35?
39
5
65
75
What is 21 and 30 more?
51
11
24
55
What is 48 and 20 more?
66
50
28
68
There are 100 books. 40 are borrowed.
How many books are left?
100 - 40 = 60
100 + 40 = 140
40 - 100 = 60
40 + 100 = 140
What is 15 less than 80?
65
95
75
85
What is 25 more than 45?
60
70
80
90
There are 90 pencils. 30 are used.
How many pencils are left?
90 - 30 = 60
90 + 30 = 120
30 - 90 = 60
30 + 90 = 120
What is 18 more than 22?
30
40
50
60
What is 12 less than 45?
33
57
23
35
