题目内容
用简便方法计算.
| 50×26×4 | 25×3×4×20 | 24×25×5 |
| 80×(7×125) | 27×4×5 | 15×7×6. |
(1)50×26×4
=50×4×26
=200×26
=5200;
(2)25×3×4×20
=(25×4)×(3×20)
=100×60
=6000;
(3)24×25×5
=4×6×25×5
=(4×25)×(5×6)
=100×30
=3000;
(4)80×(7×125)
=80×125×7
=10000×7
=70000;
(5)27×4×5
=27×(4×5)
=27×20
=540;
(6)15×7×6
=15×6×7
=90×7
=630.
=50×4×26
=200×26
=5200;
(2)25×3×4×20
=(25×4)×(3×20)
=100×60
=6000;
(3)24×25×5
=4×6×25×5
=(4×25)×(5×6)
=100×30
=3000;
(4)80×(7×125)
=80×125×7
=10000×7
=70000;
(5)27×4×5
=27×(4×5)
=27×20
=540;
(6)15×7×6
=15×6×7
=90×7
=630.
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