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8×9+7列竖式计算

. 8 × 9 ------- 72 . 72 + 7 --------- 79

7.8×9.157用怎么列竖式 计算: 7.8×9.157=71.4246

7/8×6/7×4/9 =6/8X4/9 =3/4X4/9 =1/3

如图 7×9+6=63+6=69

7 8 8 9 列式等于24 加减乘除都有 8+8*(9-7) =8+16 =24

=9/8+7/8+(1/9+8/9) =2+1 =3

13-7.86=5.149.8+4.02=13.821.68-0.59=1.0959.6+7.04=66.6492-2.87=89.13验算:10.9+7.32=18.22验算:

14.7+8.9=23.6; 12-0.8=11.2; 48×53=2544; 74×79=5846; 870÷6=145; 验算: 926÷3=308…2. 验算:

(1)225×8=1800, 225× 8 .18000(2)169×9=1521, 169× 9 .1521(3)79÷9=8…7, 8979 72 .7(4)66÷7=9…3, 9766 63 .3(5)735+698=1433, 735+698 .1433(6)1000-555=445, 1000? 555 .445.

1001÷7=143875×8=70005480÷9=608…9验算:249+761=1010

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