 The ideas in this multiplication lesson are taken from Multiplication Division 2 ebook. Only a few examples of each problem type are shown; you should make more problems of each kind for the student. Multiplying by 100 and other whole hundreds
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| 1 × 100 = ___
2 × 100 = ___ 3 × 100 = ___ |
4 × 100 = ___ 5 × 100 = ___ 6 × 100 = ___ |
7 × 100 = ___ 8 × 100 = ___ 9 × 100 = ___ |
10 × 100 = ___ |
1. Remember multiplication is repeated addition. So you can solve these problems by adding. Continue the patterns as you can.
| 1 × 200 = ____
2 × 200 = 3 × 200 = ____ 4 × 200 = ____
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1 × 300 = ____ 2 × 300 = ____ 3 × 300 = ____ |
1 × 500 = ____ 2 × 500 = ____
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2. For each multiplication, write two division sentences.
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b. 10 × 57 = | d. 100 × 3 = | ||||
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e. 2 × 300 =
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f. 200 × 3 = | h. 8 × 90 = |
3. Multiply and compare.
| 10 × 5 = ___
100 × 5 = ___ |
10 × 9 = ___
100 × 9 = ___ |
10 × 10 = ___
100 × 10 = ___ |
| 6 × 70 = ___
60 × 7 = ___ |
5 × 90 = ___
50 × 9 = ___ |
20 × 9 = ___
90 × 2 = ___ |
4. Divide. Think backwards of multiplication.
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a. 480 × 12 = |
c. 480 × 10 = | d. 200 × 20 = |
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e. 300 × 10 = |
g. 600 × 100 = | h. 600 × 200 = |
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m. 350 × 70 = |
o. 220 × 11 = | p. 220 × 110 = |
5. What numbers can you multiply to get the given number? In other
words, find factors for the given product. Find several different ones.
The first ones are given as examples.
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a. 600 = 30 × 20 600 = 300 × 2 600 = 3 × 200 600 = 100 × 6 600 = 12 × 50 |
d. 200 = |
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e. 100 =
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h. 400 = |
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