Show:
Fast Facts
On a Numberline
Base 10
Student Choice
Subtraction
100

7+9

What is 16?

100

30+12=

42

100

15+9=

24

100

12+7

19

100

23-10=

13

200

10+10=

What is 20?

200

56+34=

90

200

35+15=

50

200

26+32=

58

200
45-20=

25

300

14+9

What is 23?

300

45+36=

51

300

67+23=

90

300

56+35=

91

300

63-13=

50

400

12+19

What is 31?

400

82+9=

91

400

45+37=

82

400

73+19=

82

400

35-26=

9

500

17+17=

What is 34?

500

67+34=

101

500

78+22=

100

500

78+23=

101

500

56-17=

39