题目内容
| 下列各题,能用简便计算就用简便计算. 15×27-3000÷15 | 3.7+0.71+6.3 |
| 125×24×7 | 147×8+8×53 |
| (324-285)×12÷26 | 6.46-3.54-2.46. |
(1)15×27-3000÷15
=405-200
=205
(2)3.7+0.71+6.3
=3.7+6.3+0.71
=10+0.71
=10.71
(3)125×24×7
=125×8×3×7
=1000×3×7
=21000
(4)147×8+8×53
=(147+53)×8
=200×8
=1600
(5)(324-285)×12÷26
=39×12÷26
=468÷26
=18
(6)6.46-3.54-2.46
=6.46-(3.54+2.46)
=6.46-6
=0.46.
=405-200
=205
(2)3.7+0.71+6.3
=3.7+6.3+0.71
=10+0.71
=10.71
(3)125×24×7
=125×8×3×7
=1000×3×7
=21000
(4)147×8+8×53
=(147+53)×8
=200×8
=1600
(5)(324-285)×12÷26
=39×12÷26
=468÷26
=18
(6)6.46-3.54-2.46
=6.46-(3.54+2.46)
=6.46-6
=0.46.
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