Toán Lớp 4: 1+76+34+99+38+28 = ? tính hợp tính hộ cái
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Toán Lớp 4: 1+76+34+99+38+28 = ? tính hợp tính hộ cái
Comments ( 2 )
1 + 76 + 34 + 99 + 38 + 28
= (1 + 99) + (76 + 34) + (38 + 28)
= 100 + 110 + 66
= 210 + 66
= 276
$\text{1+76+34+99+38+28}$
$\text{=(1+99)+(76+34)+(38+28)}$
$\text{=100+110+66}$
$\text{=276}$