(1)413+(713-513)(2)79-512+518(3)1115-(45-43)(4)213-(16+0.75)(5)3.74+149+2.26+159(6)1514×2110÷34.-数学
23 |
36 |
(3)
11 |
15 |
4 |
5 |
4 |
3 |
=
11 |
15 |
12 |
15 |
20 |
15 |
=
11 |
15 |
12 |
15 |
20 |
15 |
=
19 |
15 |
(4)2
1 |
3 |
1 |
6 |
=2
1 |
3 |
1 |
6 |
3 |
4 |
=2
1 |
3 |
2 |
12 |
9 |
12 |
=2
1 |
3 |
11 |
12 |
=
28 |
12 |
11 |
12 |
=
17 |
12 |
(5)3.74+1
4 |
9 |
5 |
9 |
=(3.74+2.26)+(1
4 |
9 |
5 |
9 |
=6+3,
=9;
(6)
15 |
14 |
21 |
10 |
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