题目内容
| 计算下列各题,能简算的要简算. 3.75×
| 0.25×1.25×32 | ||||||||||||||||
| (
| ||||||||||||||||
| 5.36-1.86-3.14 | 6.8×8+3.5×8-44. |
(1)3.75×
+
×1.25,
=(3.75+1.25)×
,
=5×
,
=3;
(2)0.25×1.25×32,
=0.25×1.25×8×4,
=(0.25×4)×(1.25×8),
=1×10,
=10;
(3)
+
+1
+8
,
=(
+8
)+(
+1
),
=9+2,
=11;
(4)(
+
+
)÷
,
=(
+
+
)×12,
=
×12+
×12+
×12,
=3+10+2,
=15;
(5)5.36-1.86-3.14,
=5.36-(1.86+3.14),
=5.36-5,
=0.36;
(6)6.8×8+3.5×8-44,
=(6.8+3.5)×8-44,
=10.3×8-44,
=82.4-44,
=38.4.
| 3 |
| 5 |
| 3 |
| 5 |
=(3.75+1.25)×
| 3 |
| 5 |
=5×
| 3 |
| 5 |
=3;
(2)0.25×1.25×32,
=0.25×1.25×8×4,
=(0.25×4)×(1.25×8),
=1×10,
=10;
(3)
| 5 |
| 7 |
| 2 |
| 3 |
| 1 |
| 3 |
| 2 |
| 7 |
=(
| 5 |
| 7 |
| 2 |
| 7 |
| 2 |
| 3 |
| 1 |
| 3 |
=9+2,
=11;
(4)(
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 12 |
| 1 |
| 12 |
=(
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 12 |
=
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 12 |
=3+10+2,
=15;
(5)5.36-1.86-3.14,
=5.36-(1.86+3.14),
=5.36-5,
=0.36;
(6)6.8×8+3.5×8-44,
=(6.8+3.5)×8-44,
=10.3×8-44,
=82.4-44,
=38.4.
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