Multiplying on a Number Line
This is a complete lesson for third grade with teaching and exercises about multiplying on a number line. Students write multiplications that match the repeated jumps on a number line. They use skips of 3 and skips of 4 on the number line to help them multiply by 3 and by 4. Students also draw the number line jumps to match given multiplications.
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1. Write the multiplication sentence that the jumps on the number line illustrate.
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a. _____ × ______ = ________ |
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b. _____ × ______ = ________ |
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c. _____ × ______ = ________ |
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d. _____ × ______ = ________ |
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2. Draw more “skips” of three.
3. Multiply times 3. Use the skips above to help.
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a. 5 × 3 = ______ 4 × 3 = ______ |
b. 8 × 3 = ______ 7 × 3 = ______ |
c. 6 × 3 = ______ 3 × 3 = ______ |
d. 2 × 3 = ______ 9 × 3 = ______ |
4. How many skips of three are needed? Use the number line above to help.
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a. _____ × 3 = 24 _____ × 3 = 9 |
b. _____ × 3 = 18 _____ × 3 = 15 |
c. _____ × 3 = 21 _____ × 3 = 12 |
d. _____ × 3 = 6 _____ × 3 = 3 |
5. Draw more “skips” of four.
6. Multiply times 4. Use the skips above to help.
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a. 2 × 4 = ______ 4 × 4 = ______ |
b. 6 × 4 = ______ 7 × 4 = ______ |
c. 8 × 4 = ______ 3 × 4 = ______ |
d. 5 × 4 = ______ 1 × 4 = ______ |
7. How many skips of four are needed? Use the number line above to help.
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a. _____ × 4 = 24 _____ × 4 = 8 |
b. _____ × 4 = 0 _____ × 4 = 12 |
c. _____ × 4 = 16 _____ × 4 = 8 |
d. _____ × 4 = 20 _____ × 4 = 4 |
8. Continue and draw jumps to fit the multiplication problem.
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a. 6 × 4 = ________ |
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b. 5 × 5 = ________ |
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c. 6 × 5 = ________ |
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d. 7 × 4 = ________ |
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e. 3 × 10 = ________ |
9. Add repeatedly (or skip-count) to multiply. You can use the number line to help.
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a. 3 × 2 = ______ 6 × 3 = ______ 4 × 5 = ______ |
b. 5 × 2 = ______ 7 × 4 = ______ 3 × 8 = ______ |
c. 5 × 6 = ______ 3 × 9 = ______ 4 × 10 = ______ |
d. 3 × 10 = ______ 2 × 11 = ______ 3 × 7 = ______ |
This lesson is taken from Maria Miller's book Math Mammoth Multiplication 1, and posted at www.HomeschoolMath.net with permission from the author. Copyright © Maria Miller.
Math Mammoth Multiplication 1
A self-teaching worktext for 3rd grade that covers multiplication concept from various angles, word problems, a guide for structural drilling, and a complete study of all 12 multiplication tables.
Download ($5.20). Also available as a printed copy.
