Question

7.64*0.5-2.95的简便

Answer 1

7.64×0.5-2.95
=3.82×2×0.5-2.95
=3.82×1-2.95
=3.82-2.95
=3.82-(3-0.05)
=3.82-3+0.05
=0.82+0.05
=0.87

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Answer 2

7.64*0.5-2.95
=3.82-3+0.05

=0.87

【OK？速算法则：凑整加零头，能简先化简】
能简先化简：7.64*0.5=3.82

凑整加零头：2.95=3-0.05

Answer 3

7.64*0.5-2.95
=3.82-2.95
=3.82-3+0.05
=0.82+0.05
=0.87

Answer 4

7.64*0.5-2.95

=3.82 - 3+0.05
=0.82+0.05
=0.87

Answer 5

7.64*0.5-0.5*5.9
=（7.64-5.9)*0.5
=1.75*0.5
=0.87