Addition
Subtraction
Word Problem
Adding/Subtracting Ones Strategy
Adding/Subtracting Tens Strategy
100
22 + 9 =
31
100
46 - 4 =
42
100
Lindsey ate 38 tacos. She had 3 more than Kylie. How many did Kylie eat?
Kylie had 35 tacos.
100
27 - 3 =
Subtract the ones 7 - 3 = 4 Add back the tens 4 + 20 = 24 The answer is 24
100
45 + 20 =
Add the tens 40 + 20 = 60 Add back the ones 60 + 5 = 65
200
33 + 5
38
200
46 - 7 =
39
200
Noah swung 27 times on the swing. This was 9 fewer times than Tucker swung. How many times did Tucker swing?
27 + 9 = 36, Tucker swung 36 times.
200
45 - 3 = ____
Subtract the ones 5 - 3 = 2 Add back the tens 2 + 40 = 42 The answer is 42
200
34 - 20 = _____
Subtract the tens 30 - 20 = 10 Add back the ones 10 + 4 = 14
300
34 + 5
39
300
47 - 7 =
40
300
Gregory jumped 35 times in the jumping castle. He jumped 10 more times than Lauren. How many times did Lauren jump?
Lauren jumped 25 times. 35 - 10 = 25
300
33 + 2 = ____
Add the ones 3 + 2 = 5 Add back the tens 5 + 30 = 35 The answer is 35
300
47 - 10 = _______
Subtract the tens 40 - 10 = 30 Add back the ones 30 + 7 = 37
400
What is 8 + 8? If 8 + 8 is that than 8 + 9 is how many more?
If 8 + 8 = 16 than 8 + 9 is one more so the answer is 17
400
59 - 9
50
400
Zach West caught 37 Easter eggs and Avery caught 10 fewer. How many did Avery catch?
Avery caught 27 Easter Eggs.
400
47 - 2 = ______
Subtract your ones. 7 - 2 = 5 Add back your tens 5 + 40 = 45 The answer is 45
400
52 + 30 = ______
Add the tens 50 + 30 = 80 Add back the ones 80 + 2 = 82
500
8 + 10, is 8 + 8 + ____
2
500
39 - 20 =
19
500
John Austin found 19 zebras in the grasslands of Africa and William found 20 lions close by. How many animals did they see in all?
20 + 19 = 39, They found 39 animals altogether.
500
69 - 5 =
9 - 5 = 4 4 + 60 = 64 The asnwer is 64
500
45 - 40 = _____
Subtract the tens 40 - 40 =0 Add back the ones 0 + 5
M
e
n
u