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脱式计算,能简算的要简算.3.5÷(0.7×0.4);9.42-(2.76-1.58);1513-37-213-47;(110-112+115)÷160.
题目详情
脱式计算,能简算的要简算.
3.5÷(0.7×0.4); 9.42-(2.76-1.58);
-
-
-
; (
-
+
)÷
.
3.5÷(0.7×0.4); 9.42-(2.76-1.58);
15 |
13 |
3 |
7 |
2 |
13 |
4 |
7 |
1 |
10 |
1 |
12 |
1 |
15 |
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60 |
▼优质解答
答案和解析
(1)3.5÷(0.7×0.4)
=3.5÷0.7÷0.4
=5÷0.4
=12.5;
(2)9.42-(2.76-1.58)
=9.42-2.76+1.58
=9.42+1.58-2.76
=11-2.76
=8.24;
(3)
-
-
-
=(
-
)-(
+
)
=1-1
=0;
(4)(
-
+
)÷
=(
-
+
)×60
=
×60-
×60+
×60
=6-5+4
=5.
=3.5÷0.7÷0.4
=5÷0.4
=12.5;
(2)9.42-(2.76-1.58)
=9.42-2.76+1.58
=9.42+1.58-2.76
=11-2.76
=8.24;
(3)
15 |
13 |
3 |
7 |
2 |
13 |
4 |
7 |
=(
15 |
13 |
2 |
13 |
3 |
7 |
4 |
7 |
=1-1
=0;
(4)(
1 |
10 |
1 |
12 |
1 |
15 |
1 |
60 |
=(
1 |
10 |
1 |
12 |
1 |
15 |
=
1 |
10 |
1 |
12 |
1 |
15 |
=6-5+4
=5.
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