一、直接写出得数。
$23×0.6=$ $14.8×0.5=$ $0.6÷0.15=$
$3.65 + 6.35=$ $0.45÷0.09=$ $0.74×0.5=$
$0.3×0.25=$ $0.37 + 0.73=$ $8.43 - 5.7=$
$3.6 - 2.8=$ $6.85 - 5.8=$ $0.8×0.7=$
$0.9×2.2=$ $3÷0.06=$ $4.4 - 3.8=$
$400×0.05=$ $1.25×8=$ $4.8 + 4.2=$
$2.6 + 0.37=$ $1.3×0.5=$ $0.3÷0.6=$
$23×0.6=$ $14.8×0.5=$ $0.6÷0.15=$
$3.65 + 6.35=$ $0.45÷0.09=$ $0.74×0.5=$
$0.3×0.25=$ $0.37 + 0.73=$ $8.43 - 5.7=$
$3.6 - 2.8=$ $6.85 - 5.8=$ $0.8×0.7=$
$0.9×2.2=$ $3÷0.06=$ $4.4 - 3.8=$
$400×0.05=$ $1.25×8=$ $4.8 + 4.2=$
$2.6 + 0.37=$ $1.3×0.5=$ $0.3÷0.6=$
答案:
13.8 7.4 4
10 5 0.37
0.075 1.1 2.73
0.8 1.05 0.56
1.98 50 0.6
20 10 9
2.97 0.65 0.5
二、列竖式计算。(第一行结果保留一位小数)
$1.7÷0.3\approx$ $14.36÷2.7\approx$ $8.33÷6.2\approx$

$1.05×1.8=$ $3.24×7.5=$ $1.82÷2.6=$
$1.7÷0.3\approx$ $14.36÷2.7\approx$ $8.33÷6.2\approx$
$1.05×1.8=$ $3.24×7.5=$ $1.82÷2.6=$
答案:
5.7 5.3 1.3
1.89 24.3 0.7
三、计算下面各题,能简算的要简算。
$3 + 29 + 299 + 2999$ $0.4×28×0.25$ $7.8×1.8 - 6.8×1.8$
$3 + 29 + 299 + 2999$ $0.4×28×0.25$ $7.8×1.8 - 6.8×1.8$
答案:
3330 2.8 1.8
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