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write an expression that can be used to find 4 times 275 using mental math and properties of numbers.
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write an expression that can be used to find 4 times 275 using mental math and properties of numbers.

User Vladimir Pligin
by
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2 Answers

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(200×4) + (70×4) + (5×4)
User Bibiana
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8.8k points
1 vote
Rough estimate: 4 times 300 = 1200

Properties of numbers: 4 times (300-25) = 4 times 300 - 4 times 25
= 1200 - 100
= 1100 (exact answer)
User Amit Tiwari
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8.3k points
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