题目内容
| 计算： ①
| ②3.2-0.85-1
| ||||||||
③3.2×
| ④1.725×4×0.5= | ||||||||
⑤（
| ⑥1.8×0.72+1.28×1.8= | ||||||||
⑦2÷（
| ⑧57.6÷[（1.25+25%）×0.32]=． |
①
+
-
=
-
，
=
；
②3.2-0.85-1
=2.35-1.8，
=0.55；
③3.2×
-
÷2
=2-
，
=1
；
④1.725×4×0.5
=1.725×（4×0.5），
=1.725×2，
=3.5；
⑤（
+
）÷
=
×
+
×
，
=
+1，
=2
；
⑥1.8×0.72+1.28×1.8
=1.8×（0.72+1.28），
=1.8×2，
=3.6；
⑦2÷（
-
）
=2÷
，
=12；
⑧57.6÷[（1.25+25%）×0.32]
=57.6÷[1.5×0.32]，
=57.6÷0.48，
=120．
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |
=
| 11 |
| 12 |
| 3 |
| 8 |
=
| 13 |
| 24 |
②3.2-0.85-1
| 4 |
| 5 |
=2.35-1.8，
=0.55；
③3.2×
| 5 |
| 8 |
| 2 |
| 3 |
=2-
| 1 |
| 3 |
=1
| 2 |
| 3 |
④1.725×4×0.5
=1.725×（4×0.5），
=1.725×2，
=3.5；
⑤（
| 7 |
| 8 |
| 13 |
| 16 |
| 13 |
| 16 |
=
| 7 |
| 8 |
| 16 |
| 13 |
| 13 |
| 16 |
| 16 |
| 13 |
=
| 14 |
| 13 |
=2
| 1 |
| 13 |
⑥1.8×0.72+1.28×1.8
=1.8×（0.72+1.28），
=1.8×2，
=3.6；
⑦2÷（
| 1 |
| 2 |
| 1 |
| 3 |
=2÷
| 1 |
| 6 |
=12；
⑧57.6÷[（1.25+25%）×0.32]
=57.6÷[1.5×0.32]，
=57.6÷0.48，
=120．
练习册系列答案
相关题目