计算.49÷(56-12)10÷59+232-815×91645×23+45÷3(13+2627)×113(16+38)÷148.-数学
;
(2)10÷
+
=10×
+
=18+
=18
;
(3)2-
×
=2-
=1
;
(4)
×
+
÷3
=
×
+
×
=
×(
+
)
=
×1
=
;
(5)(13+
)×
=13×
(2)10÷
5 |
9 |
2 |
3 |
=10×
9 |
5 |
2 |
3 |
=18+
2 |
3 |
=18
2 |
3 |
(3)2-
8 |
15 |
9 |
16 |
=2-
3 |
10 |
=1
7 |
10 |
(4)
4 |
5 |
2 |
3 |
4 |
5 |
=
4 |
5 |
2 |
3 |
4 |
5 |
1 |
3 |
=
4 |
5 |
2 |
3 |
1 |
3 |
=
4 |
5 |
=
4 |
5 |
(5)(13+
26 |
27 |
1 |
13 |
=13×