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一、口算。
$0.9×0.3=$
$10 - 5.22=$
$0.28÷1.4=$
$0.16÷8=$
$3.75 - 0.57=$
$2.7×300=$
$0.63÷6=$
$0.64÷3.2=$
$4.47 - 2.6=$
$1.4×0.7=$
$4.1×0.3=$
$0.75÷0.15=$
$0.35×0.4=$
$18a - 17a=$
$7x÷2=$
$0.45×0.2=$
$1.6 - 0.15=$
$5.6÷1.4=$
$0.48 + 0.62=$
$3.07×1000=$
$24.4 - 0.44=$
$10.1 + 0.89=$
$25÷0.5=$
$1.8 - 1.08=$
$0.9×0.3=$
0.27
$10 - 5.22=$
4.78
$0.28÷1.4=$
0.2
$0.16÷8=$
0.02
$3.75 - 0.57=$
3.18
$2.7×300=$
810
$0.63÷6=$
0.105
$0.64÷3.2=$
0.2
$4.47 - 2.6=$
1.87
$1.4×0.7=$
0.98
$4.1×0.3=$
1.23
$0.75÷0.15=$
5
$0.35×0.4=$
0.14
$18a - 17a=$
a
$7x÷2=$
3.5x
$0.45×0.2=$
0.09
$1.6 - 0.15=$
1.45
$5.6÷1.4=$
4
$0.48 + 0.62=$
1.1
$3.07×1000=$
3070
$24.4 - 0.44=$
23.96
$10.1 + 0.89=$
10.99
$25÷0.5=$
50
$1.8 - 1.08=$
0.72
答案
一、0.27 4.78 0.2
0.02 3.18 810
0.105 0.2 1.87
0.98 1.23 5
0.14 a 3.5x
0.09 1.45 4
1.1 3070 23.96
10.99 50 0.72
0.02 3.18 810
0.105 0.2 1.87
0.98 1.23 5
0.14 a 3.5x
0.09 1.45 4
1.1 3070 23.96
10.99 50 0.72
二、用竖式计算。
$3.678 + 1.99$
$0.26×7.5$
$51.34÷3.4$
$2.68 - 1.369$
$57.6÷0.36$
$3400×0.383$
$3.678 + 1.99$
$0.26×7.5$
$51.34÷3.4$
$2.68 - 1.369$
$57.6÷0.36$
$3400×0.383$
答案
二、5.668 1.95 15.1
1.311 160 1302.2
