题目内容
直接写出下列各题的得数,你是最快的! 2.1+3.4= 5.5 5.5 |
720-80= 640 640 |
2.6-1.7= 0.9 0.9 |
1.4-0.6= 0.8 0.8 | ||||||||||||||||
0.3×40= 12 12 |
1.25×3×8= 30 30 |
3.8×0= 0 0 |
0.9+99×0.9= 90 90 | ||||||||||||||||
7÷1.4= 5 5 |
390×0.02= 7.8 7.8 |
2.5+1.8= 4.3 4.3 |
6.5×4×0.2= 5.2 5.2 | ||||||||||||||||
8×
6
6
|
1
1
|
44÷
40 40 |
4×(0.6+1.9)= 10 10 | ||||||||||||||||
|
0.9-0.26= 0.64 0.64 |
14.5+9.5= 24 24 |
(0.18+0.9)÷9= 0.12 0.12 | ||||||||||||||||
18÷36= 0.5 0.5 |
1.9×4×0.5= 3.8 3.8 |
7.2÷8×4= 3.6 3.6 |
78-0.8= 77.2 77.2 | ||||||||||||||||
62-35= 27 27 |
20×5.5= 110 110 |
1.68+1.5= 3.18 3.18 |
9 9 | ||||||||||||||||
8.3+1.7= 10 10 |
11.3-8.6= 2.7 2.7 |
2.4-0.5= 1.9 1.9 |
| ||||||||||||||||
2 2 |
3.25×4= 13 13 |
|
| ||||||||||||||||
24×5= 120 120 |
0.77+0.33= 1.1 1.1 |
|
12.6÷3= 4.2 4.2 | ||||||||||||||||
3.14×25= 78.5 78.5 |
3.14×36= 113.04 113.04 |
0.082= 0.0064 0.0064 |
8л= 25.12 25.12 | ||||||||||||||||
1.4: 1.75 1.75 =
8 8 ÷10=80 80 % |
分析:依据四则运算计算方法,以及比与分数,除式,百分数互化求解.
解答:
故答案依次为:5.5,640,0.9,0.8,12,30,0,90,5,7.8,4.3,5.2,6
,1
,40,10,
0.64,24,0.12,0.5,3.8,3.6,77.2,27,110,3.18,9,10,2.7,1.9,
,2,13,
,
,120,1.1,
,4.2,78.5,113.04,0.0064,25.12,1.75,8,80,.
解:2.1+3.4=5.5; | 720-80=640; | 2.6-1.7=0.9; | 1.4-0.6=0.8; | ||||||||||||
0.3×40=12; | 1.25×3×8=30; | 3.8×0=0; | 0.9+99×0.9=90; | ||||||||||||
7÷1.4=5; | 390×0.02=7.8; | 2.5+1.8=4.3; | 6.5×4×0.2=5.2; | ||||||||||||
8×
|
|
44÷
|
4×(0.6+1.9)=10; | ||||||||||||
|
0.9-0.26=0.64; | 14.5+9.5=24; | (0.18+0.9)÷9=0.12; | ||||||||||||
18÷36=0.5; | 1.9×4×0.5=3.8; | 7.2÷8×4=3.6; | 78-0.8=77.2; | ||||||||||||
62-35=27; | 20×5.5=110; | 1.68+1.5=3.18; |
| ||||||||||||
8.3+1.7=10; | 11.3-8.6=2.7; | 2.4-0.5=1.9; |
| ||||||||||||
|
3.25×4=13; |
|
| ||||||||||||
24×5=120; | 0.77+0.33=1.1; |
|
12.6÷3=4.2; | ||||||||||||
3.14×25=78.5; | 3.14×36=113.04; | 0.082=0.0064; | 8л=25.12; | ||||||||||||
1.4:1.75=
|
2 |
3 |
2 |
3 |
9 |
20 |
1 |
6 |
1 |
3 |
2 |
7 |
1 |
8 |
点评:本题主要考查学生四则运算计算能力.
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