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11-02-2016
Mathematics

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Write an expression that can be used to find 4x275 using mental math and properties numbers

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Аноним Аноним

11-02-2016

4 x 275

= 4 x (200 + 50 + 25)

= 4 x 200 + 4 x 50 + 4 x 25

= 800 + 200 + 100

= 1,100

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3083450 3083450

11-02-2016

4 x 275
4 x 200 = ?
4 x 20 = 80 so 4 x 200 = 800
4 x 70 = ?
4 x 7 = 28 so 4 x 70 = 280
4 x 5 = 20
800 + 280 + 20 = ?
800 + 200 = 1000
1000 + (80 + 20) =?
1000 + 100 = 1100

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