4.9*1.02怎么简便运算
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4.9*1.02怎么简便运算4.9*1.02怎么简便运算4.9*1.02怎么简便运算4.9×1.02=（5-0.1）×1.02=5×1.02-0.1×1.02=5.1-0.102=4.9984.9*1
4.9*1.02怎么简便运算
4.9*1.02怎么简便运算
4.9*1.02怎么简便运算
4.9×1.02
=（5-0.1）×1.02
=5×1.02-0.1×1.02
=5.1-0.102
=4.998
4.9*1.02
=4.9*(1+0.02)
=4.9+4.9*0.02
=4.9+0.098
=4.998
4.9*1.02=5*1.02-0.1*1.02=5.1-0.102=4.998
（5-0.1）*（1+0.02）
=5+0.1-0.1-0.002
=5-0.002
=4.998
4.9*1.02
=4.9*(1+0.02)
=4.9+4.9*0.02
=4.9+0.098
=4.998
4.9×1.02
=4.9×(1+0.02)
=4.9+4.9×0.02
=4.9+0.098
=4.998