2nd grade 2 didget subtraction

revew

100

What's 20-12.

8

200

what is 19-12

7

300

what is 20-15

5

400

What is 18-7

11

500

What is 15-13

2

regroping

100

What is 13-9

4

200

What is 47-38

9

300

What is 62-39

23

400

What is 29-19

10

500

What is 88-49

39

tens & ones

100

How many 10ns are in 39

3

200

How many tens are in 50

5

300

How many ones are in 30

0

400

How many ones are in 67

7

500

How many tens are in 500

50