Fluently Subtract within 100

Subtract

100

26 - 4 =

22

200

41 - 5

36

300

47 - 8

34

400

42 - 6

36

500

65 - 8

57

Which numbers can you subtract from __ without regrouping

100

44

a) 5

b) 3

c) 4

d) 6

b and c

200

63

a) 1

b) 3

c) 5

d) 6

a and b

300

76

a) 8

b) 3

c) 5

d) 4

b, c, and d

400

35

a) 7

b) 9

c) 6

d) 3

d

500

51

a) 8

b) 9

c) 2

d) 5

none

Use Addition to check

100

43 - 26 = __

__ + __ = __

43 - 26 = 17

26 + 17 = 43

200

51 - 28 = __

 __ + __ = __

51 - 28 = 23

23 + 28 = 51

300

75 - 37 = __

 __ + __ = __

75 - 37 = 38

37 + 38 = 75

400

76 - 58 = __

__ + __ = __

76 - 58 = 18

18 + 58 = 76

500

47 - 39 = __

__+ __ = __

47 - 39 = 8

39 + 8 = 47

Word Problems

100

A joke book has 96 jokes. 58 are knock-knock jokes. The rest are riddles. How many riddles are there?

96 - 58 = 38

200

A museum has 71 fossils. 47 are dinosaur fossils. The rest are fish fossils. How many fish fossils are there?

71 - 47 = 24

300

A theme park has 62 rides. 45 of them are in the amusement park. The rest are in the water park. How many rides are in the water park?

62 -45 = 17

400

There are 58 more books in a library than in a classroom. There are 9 books in the library. How many books are in the classroom?

94 - 58 = 36

500

There are 27 more harmonicas than drums in a music room. There are 55 harmonicas. How many drums are there?

55 - 27 = 28

Using tables to compare

100

Is there a greater difference between the number of animals adopted in December and January or in January and February?

December - 61

January - 54

February - 46

Dec/Jan  61 - 54 = 7

Jan/Feb 54 - 46 = 8

7<8

January and February

200

Is there a greater difference between the number of guests on Saturday and Sunday or Sunday and Monday?

Saturday - 92

Sunday - 77

Monday 59

Sat/Sun 92 - 77 = 15

Sun/Mon 77 - 59 = 18

15<18

Sunday and Monday

300

Is there a greater difference between the number of bagels sold in Sunday and Monday or on Monday and Tuesday?

Sunday - 81

Monday - 47

Tuesday - 68

Sun/Mon 81 - 47 = 34

Mon/Tues 68 - 47 = 21

34>21

Sunday and Monday

400

Is there a greater difference in the number of flowers planted in a park in April and May or in May and June

April - 78

May - 39

June - 23

Apr/May 78 - 59 = 19

May/Jun 59 - 43 = 16

19>16

April and May

500

Is there a greater difference between the number of cakes a bakery makes on Tuesday and Wednesday or Wednesday and Thursday?

Tuesday - 63

Wednesday - 48

Thursday - 57

Tues/Wed 63 - 48 = 15

Wed/Thurs 57 - 48 = 9

15>9 

Tuesday and Wednesday