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

2 answers:

6 0

Rough estimate: 4 times 300 = 1200

Properties of numbers: 4 times (300-25) = 4 times 300 - 4 times 25
= 1200 - 100
= 1100 (exact answer)

sashaice [31]3 years ago

4 0

(200×4) + (70×4) + (5×4)

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