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.