LESSON 3 Number Sentences

Tanya and Jacob drew these number lines to show how a base-ten hopper can move from 0 to 1032. They each wrote number sentences to match their number lines.

Tanya said, “If our moves are both equal to 1032, then they must be equal to each other.” She wrote:

1000 + 30 + 2 = 1000 + 10 + 10 + 10 + 2

Tanya's number sentence is a true number sentence because the amount on one side of the equal sign has the same value as the amount on the other side. Both sides equal 1032.
A true number sentence can also be called an equation because the amounts on both sides are equal.