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一、口算。
$2.34+1.66=$
$0.16×0.4=$
$2.7÷0.9-1.1=$
$1.25÷0.5=$
$3.6-0.36=$
$5.5×0.2×0.5=$
$0.2×0.8=$
$7.8+0.22=$
$4a+(3.5-2a)=$
$6.3÷0.021=$
$1.9+4.01=$
$8-0.06×5=$
$10.8÷1.8=$
$12.83-1.7=$
$14-3.6-6.4=$
$3.72÷0.6=$
$2.01÷3=$
$0.8×2-0.08=$
$4.2×0.5=$
$2.3×0.4=$
$2.92÷1.25÷0.8=$
$0.62÷0.062=$
$5m×0.08=$
$3.6÷0.6×0.15=$
$2.34+1.66=$
1.4
$0.16×0.4=$
0.064
$2.7÷0.9-1.1=$
1.9
$1.25÷0.5=$
2.5
$3.6-0.36=$
3.24
$5.5×0.2×0.5=$
0.55
$0.2×0.8=$
0.16
$7.8+0.22=$
8.02
$4a+(3.5-2a)=$
3.5+2a
$6.3÷0.021=$
300
$1.9+4.01=$
5.91
$8-0.06×5=$
7.7
$10.8÷1.8=$
6
$12.83-1.7=$
11.13
$14-3.6-6.4=$
4
$3.72÷0.6=$
6.2
$2.01÷3=$
0.67
$0.8×2-0.08=$
1.52
$4.2×0.5=$
2.1
$2.3×0.4=$
0.92
$2.92÷1.25÷0.8=$
2.92
$0.62÷0.062=$
10
$5m×0.08=$
0.4m
$3.6÷0.6×0.15=$
0.9
答案
1.4 2.0.064 3.1.9 4.2.5 5.3.24 6.0.55 7.0.16 8.8.02 9.3.5+2a 10.300 11.5.91 12.7.7 13.6 14.11.13 15.4 16.6.2 17.0.67 18.1.52 19.2.1 20.0.92 21.2.92 22.10 23.0.4m 24.0.9
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
1.5.668 2.1.95 3.15.1 4.1.311 5.160 6.1302.2
