题目内容
| 脱式计算 5845÷7+1020×5= | 2150÷(104-99)= |
| 1200-200÷5+28= | 250+255+260+265+270= |
(1)5845÷7+1020×5,
=835+5100,
=5935;
(2)2150÷(104-99),
=2150÷5,
=430;
(3)1200-200÷5+28,
=1200-40+28,
=1160+28,
=1188;
(4)250+255+260+265+270,
=250+(255+265)+(260+270),
=250+520+530,
=1300.
=835+5100,
=5935;
(2)2150÷(104-99),
=2150÷5,
=430;
(3)1200-200÷5+28,
=1200-40+28,
=1160+28,
=1188;
(4)250+255+260+265+270,
=250+(255+265)+(260+270),
=250+520+530,
=1300.
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