# Decompose Once to Subtract

Videos to help Grade 3 students learn how to decompose once to subtract measurements including three-digit minuends with zeros in the tens and ones places.

Common Core Standards: 3.NBT.2, 3.NBT.1, 3.MD.1, 3.MD.2

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Lesson Plans and Worksheets for Grade 3

Lesson Plans and Worksheets for all Grades

New York State Common Core Math Module 2, Grade 3, Lesson 18

Homework

1. Solve the subtraction problems below.
b. 370 L - 46 L
j. 837 km - 645 km
2. A magazine weighs 280 grams less than a newspaper. The weight of the newspaper is shown below. How much does the magazine weigh? Use a tape diagram to model your thinking.

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