用你认为简便的方法计算.58+(2227-58)89-16+2367+16-(38-17)1-114-27(14+25)×2025÷212÷12.-数学
1 |
6 |
=
7 |
6 |
③
6 |
7 |
1 |
6 |
3 |
8 |
1 |
7 |
=
6 |
7 |
1 |
6 |
3 |
8 |
1 |
7 |
=(
6 |
7 |
1 |
7 |
1 |
6 |
3 |
8 |
=1+
1 |
6 |
3 |
8 |
=
19 |
24 |
④1-
1 |
14 |
2 |
7 |
=1-(
1 |
14 |
2 |
7 |
=1-
5 |
14 |
=
9 |
14 |
⑤(
1 |
4 |
2 |
5 |
=
1 |
4 |
2 |
5 |
=5+8,
=13;
⑥25÷2
1 |
2 |
=25×
2 |
5 |
1 |
12 |
=