Mental Math
Subtraction within 100
Subtraction within 1,000
Mental Math
How many more to 100
100

What is 10 more than 57

67

100

52-37=

15

100

734-458=

276

100

What is 10 less than 259

249

100

20

80

200

What is 10 less than 134

124

200

90-39=

51

200

602-389=

213

200

what is 10 more than 605

615

200

25

75

300

What is 10 less than 500

490

300

82-55=

27

300

815-467=

348

300

what is 10 less than 714

704

300

55

45

400

What is 10 more than 900

910

400

43-19=

24

400

940-672=

268

400

what is 100 more than 913

1,013

400

19

81

500

What is 100 more than 972

1,072

500

56-27=

29

500

503-288=

215

500

What is 100 less than 243

143

500

47

53

M
e
n
u