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10 Cards in this Set
- Front
- Back
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Numbers that are easy to compute mentally.
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compatible numbers
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Products found by breaking one factor in a multiplication problem into ones, tens, hundreds, and so on and then multiplying each of these by the other factor.
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partial products
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Replacing a number with a number that tells about how many or how much.
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rounding
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Use breaking apart to solve
6 x 32 = _____ |
180 + 12 = 192
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Solve 3 x 500 = _____
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1,500
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Solve 5 x 400 = _____
When the product of the basic fact ends in a zero, the answer will have an extra zero. |
2,000
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Round 315 to the hundreds place.
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300
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Round 255 to the tens place.
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260
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Round 362 to the hundreds place.
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400
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Round 224 to the tens place.
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220
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