题目内容
(1)240×50%=
(2)6.25:
=
(3)5-4÷
=
(4)21×
-0.375÷
=
(5)0.75÷0.15-0.375×
=
(6)10×3
÷3
×10=
(7)1.25×99.99×0.4×8×2.5=
(8)2
×12.5×
×8=
(2)6.25:
| 5 |
| 24 |
(3)5-4÷
| 4 |
| 5 |
(4)21×
| 1 |
| 3 |
| 1 |
| 8 |
(5)0.75÷0.15-0.375×
| 4 |
| 5 |
(6)10×3
| 5 |
| 6 |
| 5 |
| 6 |
(7)1.25×99.99×0.4×8×2.5=
(8)2
| 1 |
| 3 |
| 6 |
| 7 |
(1)240×50%=120;
(2)6.25:
=30;
(3)5-4÷
=5-5,
=0;
(4)21×
-0.375÷
=7-3,
=4;
(5)0.75÷0.15-0.375×
=5-0.3,
=4.7;
(6)10×3
÷3
×10
=3
÷3
×10×10,
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
×12.5×
×8
=
×
×(12.5×8),
=1×100,
=100.
(2)6.25:
| 5 |
| 24 |
(3)5-4÷
| 4 |
| 5 |
=5-5,
=0;
(4)21×
| 1 |
| 3 |
| 1 |
| 8 |
=7-3,
=4;
(5)0.75÷0.15-0.375×
| 4 |
| 5 |
=5-0.3,
=4.7;
(6)10×3
| 5 |
| 6 |
| 5 |
| 6 |
=3
| 5 |
| 6 |
| 5 |
| 6 |
=1×10×10,
=100;
(7)1.25×99.99×0.4×8×2.5
=(1.25×8)×(0.4×2.5)×99.99,
=10×1×99.99,
=999.9;
(8)2
| 1 |
| 3 |
| 6 |
| 7 |
=
| 7 |
| 3 |
| 6 |
| 7 |
=1×100,
=100.
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