69×2.1+2.1×1.31+2.1 18- 查看更多

 

题目列表(包括答案和解析)

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=

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口算.
8.35-1.25=
12.62+3.42= 9.16-3.26=
6.2+1.8= 18-1.47= 80×0.125=
3.7×2= 0.25×16= 33+7.69=
0.48÷0.01= 1.25×8= 3.6÷0.6=
9.1÷0.07= 0.72÷12= 0.9×0.1=
2.01+3.9= 0÷0.1×29= 0.7×0.04=

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直接写出得数.
250-199=

12.6÷0.06=

165﹢98=

2.5-0.05=
2.5×0.4= 12÷
3
4
=
2-
5
7
=
3
4
÷
4
9
=
1.2×20%=
5
7
×
14
25
=
205×29≈ 417÷69≈

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(1)9.5除以5的商,加上8.6与6.5的差,和是多少?
 (2)2.15与14.74的差除以1.69,商是多少?

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(1)375+137÷(69+68) (2)2.5+28.6+0.73 (3)5.06-(3.14+0.4) (4)4900-20+15×17.

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