问题 解答题
1.8+0.5=2.5-0.1=4.8-0.2=74+71=
48+10=24÷12=68÷0.68=94.7÷0.1=
61.8÷0.6=0.8×6.7=3÷8=0.12×3=
32=8.2-2.8=3.5÷0.7=
4
5
-
1
5
=
1
3
+
1
4
=
1
16
+
7
16
=
5.3+0.5=46+18=
8.5-1.5=69+10=28.8+0.4=40.5÷0.5=
92.7÷0.3=0.5×1.3=16×0.5=4.4+0.1=
6.1-0.1=3.3+0.6=33.2÷0.4=1÷0.25=
1.5×4=6.5+1.35=1.3-1.2=
7
8
-
1
4
=
1
2
+
3
4
=
5
6
-
1
3
=
5.7-1.7=0.35+0.75=
0.2×1.1=1.6÷0.4=10÷4=3.4÷0.2=
52÷13=57÷19=3.7-0.8=29+92=
8.2+0.7=6.5-5.6=4.8÷0.3=33=
1.25×8=
2
3
+
1
6
=
1
2
-
1
3
=
7
9
+
1
9
=
2.1÷0.3=3.2×3=2.8-1.8=0.9×6.2=
答案

1.8+0.5=2.3,2.5-0.1=2.4,4.8-0.2=4.6,74+71=145,
48+10=58,24÷12=2,68÷0.68=100,94.7÷0.1=947,
61.8÷0.6=103,0.8×6.7=5.36,3÷8=0.375,0.12×3=0.36,
32=9,8.2-2.8=5.43.5÷0.7=5,
4
5
-
1
5
=
3
5
1
3
+
1
4
=
7
12
1
16
+
7
16
=
1
2
5.3+0.5=5.8,46+18=64,
8.5-1.5=7,69+10=79,28.8+0.4=29.2,40.5÷0.5=81,
92.7÷0.3=309,0.5×1.3=0.65,16×0.5=8,4.4+0.1=4.5,
6.1-0.1=6,3.3+0.6=3.9,33.2÷0.4=83,1÷0.25=4,
1.5×4=6,6.5+1.35=7.85,1.3-1.2=0.1,
7
8
-
1
4
=
5
8
1
2
+
3
4
=
5
4
5
6
-
1
3
=
1
2
5.7-1.7=4,0.35+0.75=1.1,
0.2×1.1=0.22,1.6÷0.4=4,10÷4=2.5,3.4÷0.2=17,
52÷13=4,57÷19=3,3.7-0.8=2.9,29+92=121,
8.2+0.7=8.9,6.5-5.6=0.9,4.8÷0.3=16,33=27,
1.25×8=10,
2
3
+
1
6
=
5
6
1
2
-
1
3
=
1
6
7
9
+
1
9
=
8
9
2.1÷0.3=7,3.2×3=9.6,2.8-1.8=1,0.9×6.2=5.58.
故答案为:2.3,2.4,4.6,145,58,2,100,947,103,5.36,0.375,0.36,9,5.4,5,
3
5
7
12
1
2
,5.6,64,7,79,29.2,81,309,0.65,8,4.5,6,3.9,83,4,6,7.85,0.1,
5
8
5
4
1
2
,4,1.1,0.22,4,2.5,17,4,3,2.9,121,8.9,0.9,16,27,10,
5
6
1
6
8
9
,7,9.6,1,5.58.

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