Adding and subtracting on a number line worksheets

Counting on two to add two is the first time counting becomes arithmetic. These free printable worksheets draw the hop on a number line and ask a child where it lands — forwards for adding, backwards for taking away.

If they get stuck

Adding and subtracting on a number line
Adding and subtracting on a number line worksheet — Hops on a line to 20, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

Every question is one hop over a 0-to-20 line. The arrow points the way it went, so a backwards hop is a subtraction and the child can see that taking away and counting back are the same move — which is the thing a vertical sum never shows.

Why this sheet works

The sum itself is not printed, and that is the question. A child who can read 12 − 5 off the arc has related the counting to the arithmetic; printing it beside the line would let them ignore the picture entirely.