1.直接写出得数。(每题1★)
8.2+2.8=
0.2×0.4=
2.5×4=
60×0.23=
0.58÷29=
0.108÷2=
5×0.12=
3.7+6.4=
0.5×0.3=
0÷13.07=
2×3.5=
72.8÷0.8=
1.4−0.9=
0.8×600=
0.03×4=
2.5×0.08=
4.5÷0.9=
0.5×0.8=
9.56×0=
4.8÷0.12=
8.2+2.8=
0.2×0.4=
2.5×4=
60×0.23=
0.58÷29=
0.108÷2=
5×0.12=
3.7+6.4=
0.5×0.3=
0÷13.07=
2×3.5=
72.8÷0.8=
1.4−0.9=
0.8×600=
0.03×4=
2.5×0.08=
4.5÷0.9=
0.5×0.8=
9.56×0=
4.8÷0.12=
答案
1. 8.2+2.8=11
0.2×0.4=0.08
2.5×4=10
60×0.23=13.8
0.58÷29=0.02
0.108÷2=0.054
5×0.12=0.6
3.7+6.4=10.1
0.5×0.3=0.15
0÷13.07=0
2×3.5=7
72.8÷0.8=91
1.4−0.9=0.5
0.8×600=480
0.03×4=0.12
2.5×0.08=0.2
4.5÷0.9=5
0.5×0.8=0.4
9.56×0=0
4.8÷0.12=40
0.2×0.4=0.08
2.5×4=10
60×0.23=13.8
0.58÷29=0.02
0.108÷2=0.054
5×0.12=0.6
3.7+6.4=10.1
0.5×0.3=0.15
0÷13.07=0
2×3.5=7
72.8÷0.8=91
1.4−0.9=0.5
0.8×600=480
0.03×4=0.12
2.5×0.08=0.2
4.5÷0.9=5
0.5×0.8=0.4
9.56×0=0
4.8÷0.12=40
2.列竖式计算。(每题3★)
12.8×0.45=
4.94÷6.5=
34.2÷0.76=
12.8×0.45=
4.94÷6.5=
34.2÷0.76=
答案
2. 12.8×0.45=5.76
4.94÷6.5=0.76
34.2÷0.76=45(竖式略)
4.94÷6.5=0.76
34.2÷0.76=45(竖式略)
3.计算下面各题,能简算的要简算。(每题3★)
78.3×11-78.3
2.5×32×1.25
(9-0.45+0.25+0.5)÷0.05
3.6÷2.5÷0.4
5.8×3.3+6.7×5.8
(14.4+1.26)÷0.6
78.3×11-78.3
2.5×32×1.25
(9-0.45+0.25+0.5)÷0.05
3.6÷2.5÷0.4
5.8×3.3+6.7×5.8
(14.4+1.26)÷0.6
答案
3. 78.3×11-78.3=783
2.5×32×1.25=100
(9-0.45+0.25+0.5)÷0.05=186
3.6÷2.5÷0.4=3.6
5.8×3.3+6.7×5.8=58
(14.4+1.26)÷0.6=26.1
2.5×32×1.25=100
(9-0.45+0.25+0.5)÷0.05=186
3.6÷2.5÷0.4=3.6
5.8×3.3+6.7×5.8=58
(14.4+1.26)÷0.6=26.1
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