Create your own centimeter ruler. Then, estimate and measure with lengths with it. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through ...
You don’t need a calculator to quickly find the center of something that’s an odd length, such as 37 5/8 inches. The smart folks at This Old House show us two ways to quickly divide a length in half ...
How many inches are in a foot? Pick inches or feet to measure the length of objects. Warm up with a Mystery Math Mistake to add 2 two-digit numbers. Explore how many inches there are in a foot.
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