Add and subtract within 100 using compose, decompose, and place value strategies. Engage with a number talk to sum near-doubles using compensation. Add and subtract within 100 in more than one way.

Place value describes the position of a digit in a number. It also gives the value of each digit in a number. Hundred squares, number lines, bundles of straws and tens and ones blocks can be really ...

When you order numbers to 100, you can arrange them from smallest to greatest or from greatest to smallest. Look at the tens first and then the ones if you need to. This number line goes from 0 to 100 ...