Subtracting on a number line (Teen numbers)

1

100

What is the sum of 11-3?

8.

200

What is 11-6?

5

300

What is 19-9?

10.

400

___= 15-6

9

500

15-___=7

a) 5

b) 2

c) 8

c) 8

2

100

Which way do we go on the number line when we subtract?

a) to the left

b) to the right

b) to the left.

200

What is 17-6?

11.

300

What is 19-10?

9.

400

Mrs. Gillett has a number line and does 13-5.

Mrs. Gillett says 13-5= 18.

Is Mrs. Gillett correct?

No, Mrs. Gillett is not correct. She added her numbers instead of subtracting them.

500

Help me find 16-7 on a number line.

fill in the blanks!

start at ___.

count back ___.

16-7=___

start at 16.

count back 7.

16-7= 9