Count Back vs Count Up To

Count Back

100

Use the count-back strategy to solve this problem:

12 - 4 = ?

8

200

Use the count-back strategy to solve this problem:

11 - 5 = ?

6

300

Use the count-back strategy to solve this problem:

17 - 8 = ?

9

400

Use the count-back strategy to solve this problem:

24 - 6 = ?

18

500

Use the count-back strategy to solve this problem:

72 - 5 = ?

67

Count Up To

100

Use the count-up-to strategy to solve this problem:

8 - 7 = ?

1

200

Use the count-up-to strategy to solve this problem:

18 - 14 = ?

4

300

Use the count-up-to strategy to solve this problem:

12 - 9 = ?

3

400

Use the count-up-to strategy to solve this problem:

31 - 29 = ?

2

500

Use the count-up-to strategy to solve this problem:

74 - 67 = ?

7

Which Strategy is Faster?

100

Which strategy will be faster for this problem: count-back or count-up-to?

16 - 3 = ?

count-back

200

Which strategy will be faster for this problem: count-back or count-up-to?

12 - 7 = ?

count-up-to

5 away

300

Which strategy will be faster for this problem: count-back or count-up-to?

22 - 17 = ?

count-up-to

5 away

400

Which strategy will be faster for this problem: count-back or count-up-to?

31 - 4 = ?

count-back

500

Which strategy will be faster for this problem: count-back or count-up-to?

11 - 8 = ?

count-up-to

3 away

Test Your Might

100

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

9 - 2 = ?

count-back

7

200

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

15 - 3 = ?

count-back

13

300

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

11 - 8 = ?

count-up-to

3

400

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

21 - 17 = ?

count-up-to

4

500

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

46 - 38 = ?

count-up-to

8

Test Your Might 2

100

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

17 - 2 = ?

count back

15

200

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

22 - 19 = ?

count up

3

300

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

67 - 59 = ?

count up

8

400

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

101 - 97 = ?

count up

4

500

Use the fastest strategy to solve this problem. You must use the fastest strategy to get the points for this question.

103 - 4 = ?

count back

99