简便计算7.69×101（8×5.27）×1.2546×0.33+54×0.330.25×39+0.250.125×7232.5×9.9+3.25

Question

简便计算

7.69×101	（8×5.27）×1.25	46×0.33+54×0.33
0.25×39+0.25	0.125×72	32.5×9.9+3.25

Answer 1

（1）7.69×101
=7.69×（100+1）
=7.69×100+7.69×1
=769+7.69
=776.69

（2）（8×5.27）×1.25
=8×1.25×5.27
=10×5.27
=52.7

（3）46×0.33+54×0.33
=（46+54）×0.33
=100×0.33
=33

（4）0.25×39+0.25
=0.25×（39+1）
=0.25×40
=10

（5）0.125×72
=0.125×（8×9）
=0.125×8×9
=1×9
=9

（6）32.5×9.9+3.25
=32.5×9.9+32.5×0.1
=32.5×（9.9+0.1）
=32.5×10
=325