1st Grade Number Line Addition Worksheet: Count the Hops, Mark the Sentence

Ask a six-year-old to show 2 + 4 on a ruler, and the finger often lands on the 4 instead of starting at the 2. This 1st grade number line addition worksheet works on that exact habit. Four colored number lines run from 0 to 10, with small +1 hops drawn above the numbers. Your child finds where the hops begin, counts them, then reads where they land. Next, they mark the one addition sentence, out of four cards, that tells the same story. The first line is a worked example with its check mark, so the routine is clear before your child begins. A second page gives the answer key.

Why a number line makes adding visible

A number line turns adding into moving. You start on one number, hop forward, and the landing spot is the sum. That picture matters later, because it leads straight to counting on and, in time, to adding bigger numbers in jumps.

Each hop on this page carries a tiny +1 label. So every jump is one step, and the number of hops is the second number in the sum. For example, on the green line, the hops leave 2 and stop at 6: four hops of one, so 2 + 4 = 6.

The cards also do some teaching. Several of them reach the same total, so the end point alone is not enough. Your child has to check the starting number as well. That is careful reading.

At the table: where do the hops begin?

Begin with the green example. Ask your child to put a finger on the 2, then tap each hop while you count together.

The likely slip comes on the blue line. The hops end at 10, and more than one card ends with 10. A child who looks only at the landing spot may tick the first card that matches. Instead of correcting, point to the first hop and ask, "Where did the jumps start?"

The same trap waits on the purple line, where two cards end in 8. Some children also count the numbers instead of the hops, which adds one too many. Go slowly here. If that happens, offer one short hint: "Count the little arches, not the numbers."

Finally, ask your child to read each ticked card out loud and trace its hops once more.

Hops on the floor, hops in the yard

Tape on the floor works as well as paper. Stick eleven strips in a row, write 0 to 10, and let your child jump the sums: stand on 3, hop four times, read the landing number. After a few rounds, swap roles and let them call out a sum for you.

Also, the playground game Hopscotch is a ready-made number line. While your child hops, ask where they started and how many squares they jumped. Count out loud together.

Once you finish the page, compare it with the answer key side by side. Then name the work, not the score: "You checked where every jump began."