问题
解答题
脱式计算(能简算的要简算)
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答案
(1)0.75×4×0.25,
=0.75×(4×0.25),
=0.75×1,
=0.75;
(2)50+10×99,
=50+990,
=1040;
(3)16÷8-0.72,
=2-0.72,
=1.23;
(4)4.536÷0.8÷14,
=5.67÷14,
=0.405;
(5)3×3.6+1.4×10,
=10.8+14,
=24.8;
(6)6.3×11,
=6.3×(10+1),
=6.3×10+6.3×1,
=63+6.3,
=69.3.