Addition
Subtraction
Estimate Sum
Estimate Difference
Word Problems
100

28 + 33 = 

61

100

36 - 10 =

26

100

Estimate the sum: 45 + 26 =

50 + 30 = 80 
100

Estimate the difference 78 - 42 =

80-40=40

100

The restaurant had 54 bottles of ketchup and 25 bottles of mustard in the storage room. How many fewer bottles of mustard than ketchup did they have? 

54-25=29

200

88 + 22 =

110

200

45 - 12 = 

33

200

Estimate the sum 31 + 38 =

30+ 40=70

200

Estimate the difference: 62 - 37 =

60-40=20

200

Jessie had 16 lemons. She brought 20 more to make lemonade. How many does she have now? 

16+20=36

300

37 + 31 =

68

300

62 - 47 =

15

300

Estimate the sum: 21+16

20+20=40

300

Estimate the difference 80 - 21 = 

80-20=60

300

There were 64 pear trees in the orchard. Michael planted 23 more. How many trees are in the orchard now? 

64+23= 87

400

67 + 23 

90

400

54 - 17 =

37

400

Estimate the sum: 73 + 15 =

70+20=90

400

Estimate the difference: 94 - 24 =

90-20=70

400
David counted 16 seagulls flying over the ocean. He counted 24 seagulls walking along the beach. How many more seagulls were walking than flying? 

24-16=8

500

55 + 15 = 

70

500

83 - 26 = 

57

500

Estimate the sum: 51+49

50+50=100

500

Estimate the difference 99-11 =

100-10=90

500
Fred delivered 54 letters on Thursday Morning. Then another 26 letters that afternoon. What is the total number of letters Fred delivered? 

54+26=80

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