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19 November, 00:10

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

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  1. 19 November, 02:01
    0
    4 x 275

    = 4 x (200 + 50 + 25)

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

    = 800 + 200 + 100

    = 1,100
  2. 19 November, 02:20
    0
    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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