A number line is a tool that helps us see how numbers grow. When we add, we start at one number and move forward to find the sum.
Always move to the right when adding on a number line because the total gets larger.
Instead of starting at zero, we can begin at the first number and count on the second number of steps.
Counting on is faster than starting from zero every time. Use the bigger number first.
We can use the number line to make quick jumps of ten, then smaller jumps to finish the addition. This helps with larger numbers up to 20.
Breaking numbers apart helps make addition easier. Think about how to reach the next ten before adding the rest.
We can use number lines to solve everyday problems, like counting items or keeping track of scores.
Draw your own number line on paper. Use it to solve story problems about your toys, books, or snacks.