 # Multiply by Multiples of 10

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Lesson Plans and Worksheets for Grade 3
Lesson Plans and Worksheets for all Grades

Examples, solutions, and videos to help Grade 3 students learn how to multiply by multiples of 10 using the place value chart.

Common Core Standards: 3.OA.5, 3.OA.8, 3.OA.9, 3.NBT.3, 3.OA.1

New York State Common Core Math Grade 3, Module 3, Lesson 19

Application Problem
Mia has 152 beads. She uses some to make bracelets. Now there are 80 beads. If she uses 8 beads for each bracelet, how many bracelets does she make?
Note: This problem reviews solving two-step word problems involving more than one operation from Lesson 18.

Concept Development

Problem 1: Multiply by multiples of 10 using place value disks.

Problem 2: Multiply by multiples of 10 using a place value chart.

Lesson 19 Homework
1. Use the disks to complete true number sentences.
a. 3 ones × 3 = _______ ones
3 × 3 = _______
b. 3 tens × 3 = _______ tens
30 × 3 = _______
2. Use the chart to complete true number sentences.
a. 2 × 5 ones = _______ ones
2 × 5 = _______
b. 2 × 5 tens = _______ tens
2 × 50 = _______
c. 5 × 5 ones = _______ ones
5 × 5 = _______
d. 5 × 5 tens = _______ tens
5 × 50 = _______

3. Match.

4. Each classroom has 30 desks. Use a tape diagram to find the total number of desks in 8 classrooms.

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