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1. 直接写出得数。
1.7×2=
3.5+1.8=
10-3.29=
14×0.05÷0.7=
3.35×10=
9.2÷0.4=
1.3-0.09=
0.72÷0.09×20=
2.6×0.1=
0.65÷0.5=
2.4×0.8=
0.2÷10×0.3=
10.8÷1.8=
0.66÷0.3=
4.05÷0.5=
4.3×0.5÷0.1=
4.6a+2.9a=
0.16k×4=
2.4c×0.4c=
1.3b×6×0.1=
2.8c-1.5c=
2.4m×0.2=
2.5d÷0.05=
7.5m÷5-3=
2.16a×2=
1.1n×0.6n=
3.5k×8k=
5.6c-(4.2c+2)=
1.7×2=
3.4
3.5+1.8=
5.3
10-3.29=
6.71
14×0.05÷0.7=
1
3.35×10=
33.5
9.2÷0.4=
23
1.3-0.09=
1.21
0.72÷0.09×20=
160
2.6×0.1=
0.26
0.65÷0.5=
1.3
2.4×0.8=
1.92
0.2÷10×0.3=
0.006
10.8÷1.8=
6
0.66÷0.3=
2.2
4.05÷0.5=
8.1
4.3×0.5÷0.1=
21.5
4.6a+2.9a=
7.5a
0.16k×4=
0.64k
2.4c×0.4c=
0.96c²
1.3b×6×0.1=
0.78b
2.8c-1.5c=
1.3c
2.4m×0.2=
0.48m
2.5d÷0.05=
50d
7.5m÷5-3=
1.5m-3
2.16a×2=
4.32a
1.1n×0.6n=
0.66n²
3.5k×8k=
28k²
5.6c-(4.2c+2)=
1.4c-2
答案
1. 3.4 5.3 6.71 1 33.5 23 1.21 160 0.26 1.3 1.92 0.006 6 2.2 8.1 21.5 7.5a 0.64k 0.96c² 0.78b 1.3c 0.48m 50d 1.5m-3 4.32a 0.66n² 28k² 1.4c-2
2. 计算下面各题,能简算的要简算。
13.5-0.19-3.81-4.5
87.6×99+87.6
(3.25-0.75)×0.25×0.4
1.4×2.5+0.8÷0.5
3.61÷(7.2-5.3)×30
36÷[1.44×(0.1-0.05)]
13.5-0.19-3.81-4.5
87.6×99+87.6
(3.25-0.75)×0.25×0.4
1.4×2.5+0.8÷0.5
3.61÷(7.2-5.3)×30
36÷[1.44×(0.1-0.05)]
答案
2. 5 8760 0.25 5.1 57 500
解析
13.5-0.19-3.81-4.5
=(13.5-4.5)-(0.19+3.81)
=9-4
=5
87.6×99+87.6
=87.6×(99+1)
=87.6×100
=8760
(3.25-0.75)×0.25×0.4
=2.5×(0.25×0.4)
=2.5×0.1
=0.25
1.4×2.5+0.8÷0.5
=3.5+1.6
=5.1
3.61÷(7.2-5.3)×30
=3.61÷1.9×30
=1.9×30
=57
36÷[1.44×(0.1-0.05)]
=36÷[1.44×0.05]
=36÷0.072
=500
=(13.5-4.5)-(0.19+3.81)
=9-4
=5
87.6×99+87.6
=87.6×(99+1)
=87.6×100
=8760
(3.25-0.75)×0.25×0.4
=2.5×(0.25×0.4)
=2.5×0.1
=0.25
1.4×2.5+0.8÷0.5
=3.5+1.6
=5.1
3.61÷(7.2-5.3)×30
=3.61÷1.9×30
=1.9×30
=57
36÷[1.44×(0.1-0.05)]
=36÷[1.44×0.05]
=36÷0.072
=500
统计图被墨水污染了,已知三人的语文、数学平均成绩分别是 92 分、97 分,则朱佳的数学成绩是(
93
)分,语文成绩是(98
)分；王欢的语文成绩是(85
)分。答案
93 98 85
