题目内容
脱式计算,能简算的要简算.
(1)
-
+
-
(2)3.35×99×2+6.7
(3)
×[
÷(
-
)]
(4)6÷
-
÷6
(5)1.7+5.02+3.98
(6)(
+
)×12.
(1)
| 3 |
| 7 |
| 2 |
| 5 |
| 4 |
| 7 |
| 3 |
| 5 |
(2)3.35×99×2+6.7
(3)
| 3 |
| 8 |
| 8 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
(4)6÷
| 3 |
| 5 |
| 3 |
| 5 |
(5)1.7+5.02+3.98
(6)(
| 3 |
| 4 |
| 2 |
| 3 |
(1)
| 3 |
| 7 |
| 2 |
| 5 |
| 4 |
| 7 |
| 3 |
| 5 |
=(
| 3 |
| 7 |
| 4 |
| 7 |
| 2 |
| 5 |
| 3 |
| 5 |
=1-1,
=0;
(2)3.35×99×2+6.7,
=3.35×2×99+6.7,
=6.7×99+6.7,
=6.7×(99+1),
=6.7×100,
=670;
(3)
| 3 |
| 8 |
| 8 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
=
| 3 |
| 8 |
| 8 |
| 9 |
| 1 |
| 12 |
=
| 3 |
| 8 |
| 32 |
| 3 |
=4;
(4)6÷
| 3 |
| 5 |
| 3 |
| 5 |
=10-0.1,
=9.9;
(5)1.7+5.02+3.98,
=1.7+(5.02+3.98),
=1.7+9,
=10.7;
(6)(
| 3 |
| 4 |
| 2 |
| 3 |
=
| 3 |
| 4 |
| 2 |
| 3 |
=9+8,
=17.
练习册系列答案
相关题目