计算下面各题,能简便计算的要简便计算.(58+76)×12 ...
计算下面各题,能简便计算的要简便计算.(58+76)×126.3+6.44+2.7+3.56(450-126)×(82-64)15.35-(5.35+7.2)67×8×1...
计算下面各题,能简便计算的要简便计算.(58+76)×12 6.3+6.44+2.7+3.56(450-126)×(82-64)15.35-(5.35+7.2)67×8×125 400+612÷12×4.
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(1)(58+76)×12
=134×12
=1608;
(2)6.3+6.44+2.7+3.56
=(6.3+2.7)+(6.44+3.56)
=9+10
=19;
(3)(450-126)×(82-64)
=324×18
=5832;
(4)15.35-(5.35+7.2)
=15.35-5.35-7.2
=10-7.2
=2.8;
(5)67×8×125
=67×(8×125)
=67×1000
=67000;
(6)400+612÷12×4
=400+51×4
=400+204
=604.
=134×12
=1608;
(2)6.3+6.44+2.7+3.56
=(6.3+2.7)+(6.44+3.56)
=9+10
=19;
(3)(450-126)×(82-64)
=324×18
=5832;
(4)15.35-(5.35+7.2)
=15.35-5.35-7.2
=10-7.2
=2.8;
(5)67×8×125
=67×(8×125)
=67×1000
=67000;
(6)400+612÷12×4
=400+51×4
=400+204
=604.
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