635-12×21计算下列各题用简单的方法
用你喜欢的方法计算下列各题(最后四题用简便方法计算).1575-635+2659800÷(49×25)240÷80+71×12(57×35+43×35)÷14150+42...
用你喜欢的方法计算下列各题(最后四题用简便方法计算). 1575-635+265 9800÷(49×25) 240÷80+71×12 (57×35+43×35)÷14 150+42×37 480-(32+32÷4) 125×56 35×99+35 790-218-82 10200÷4÷25.
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(1)亩滚1575-635+265,
=940+265,
=1205;
(2)9800÷(49×25),
=9800÷1225,
=8;
(3)240÷80+71×12,
=3+852,
=855;
(4)(57×35+43×35)÷14,
=(1995+1505)÷14,
=3500÷14,
=250;
(5)150+42×37,
=150+1554,
=1704;迅数余
(6)480-(32+32÷4),
=480-(32+8),
=480-40,
=440;
(7)125×56,
=125×8×7,
=1000×7,
=7000;
(8)35×99+35,
=(99+1)×35,
=100×35,
=3500;
(9)790-218-82,
=790-(218+82),
=790-300,
=490;
(10)10200÷4÷25,
=10200÷(4×25),
=10200÷100,毕仔
=102.
=940+265,
=1205;
(2)9800÷(49×25),
=9800÷1225,
=8;
(3)240÷80+71×12,
=3+852,
=855;
(4)(57×35+43×35)÷14,
=(1995+1505)÷14,
=3500÷14,
=250;
(5)150+42×37,
=150+1554,
=1704;迅数余
(6)480-(32+32÷4),
=480-(32+8),
=480-40,
=440;
(7)125×56,
=125×8×7,
=1000×7,
=7000;
(8)35×99+35,
=(99+1)×35,
=100×35,
=3500;
(9)790-218-82,
=790-(218+82),
=790-300,
=490;
(10)10200÷4÷25,
=10200÷(4×25),
=10200÷100,毕仔
=102.
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