Toán Lớp 4: tính thuận tiện
26 x 17 + 38 x 26 +26 x44 +26
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Toán Lớp 4: tính thuận tiện
26 x 17 + 38 x 26 +26 x44 +26
Comments ( 2 )
26 x 17 + 38 x 26 +26 x 44 + 26 = 26 x 17 + 38 x 26 +26 x 44 + 26 x 1 = 26 x (17 + 38 + 44 +1) = 26 x 100 = 2600#ngocmaai