直接写得数338+99=0.9÷0.45=3.5×0.4=1-513=(13-14)÷112=3.8÷0.1×10=2.5×7×0.4=0.5×14÷14×0.5=149149:17=17.
338+99= | 0.9÷0.45= | 3.5×0.4= |
1-= | (-)÷= | 3.8÷0.1×10= |
2.5×7×0.4= | 0.5×÷×0.5= | :=. |
338+99= | 0.9÷0.45= | 3.5×0.4= |
338+99= | 0.9÷0.45= | 3.5×0.4= | 1-= | (-)÷= | 3.8÷0.1×10= |
1-= | =5 |
5 | 13 |
13 | (-)÷= | -)÷=1 |
1 | 3 |
3 | )÷=1 |
1 | 4 |
4 | =1 |
1 | 12 |
12 | 3.8÷0.1×10= | 2.5×7×0.4= | 0.5×÷×0.5= | :=. |
2.5×7×0.4= | 0.5×÷×0.5= | ÷×0.5=1 |
1 | 4 |
4 | ×0.5=1 |
1 | 4 |
4 | :=. | 1 |
1 | 49 |
49 | 1 |
1 | 49 |
49 | =.1 |
1 | 7 |
7 | .1 |
1 | 7 |
7 |
答案和解析
338+99=437 | 0.9÷0.45=2 | 3.5×0.4=1.4 |
1-= | (-)÷=1 | 3.8÷0.1×10=380 |
2.5×7×0.4=7 | 0.5×÷×0.5=0.25 | :=. |
338+99=437 | 0.9÷0.45=2 | 3.5×0.4=1.4 |
338+99=437 | 338+99=437
0.9÷0.45=2 | 0.9÷0.45=2
3.5×0.4=1.4 | 3.5×0.4=1.4
1-= | (-)÷=1 | 3.8÷0.1×10=380 |
1-= | 1-
=5 |
5 | 5
13 |
13 | 13=
8 |
8 | 8
13 |
13 | 13
(-)÷=1 | (
-)÷=11 |
1 | 1
3 |
3 | 3-
)÷=11 |
1 | 1
4 |
4 | 4)÷
=11 |
1 | 1
12 |
12 | 12=1
3.8÷0.1×10=380 | 3.8÷0.1×10=380
2.5×7×0.4=7 | 0.5×÷×0.5=0.25 | :=. |
2.5×7×0.4=7 | 2.5×7×0.4=7
0.5×÷×0.5=0.25 | 0.5×
÷×0.5=0.251 |
1 | 1
4 |
4 | 4÷
×0.5=0.251 |
1 | 1
4 |
4 | 4×0.5=0.25
:=. | :=.1 |
1 | 1
49 |
49 | 49:
=.1 |
1 | 1
7 |
7 | 7=
.1 |
1 | 1
7 |
7 | 7.
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