题目内容
| 简算. 102×48 | 4000÷125 | 4500÷(45×25) |
| 260÷5. | 147+386+853 | 2485-(760+1485) |
| 198÷2×45+45 | 75×128-28×75. |
(1)102×48
=100×48+2×48
=4800+96
=4896;
(2)4000÷125
=4×(1000÷125)
=4×8
=32;
(3)260÷5
=26×(10÷5)
=26×2
=52;
(4)147+386+853
=147+853+386
=1000+386
=1386;
(5)198÷2×45+45
=99×45+45
=(99+1)×45
=100×45
=4500;
(6)75×128-28×75
=75×(128-28)
=75×100
=7500.
=100×48+2×48
=4800+96
=4896;
(2)4000÷125
=4×(1000÷125)
=4×8
=32;
(3)260÷5
=26×(10÷5)
=26×2
=52;
(4)147+386+853
=147+853+386
=1000+386
=1386;
(5)198÷2×45+45
=99×45+45
=(99+1)×45
=100×45
=4500;
(6)75×128-28×75
=75×(128-28)
=75×100
=7500.
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