问题 选择题
与4.2×1.01相等的算式是(  )
A.(100+1)×4.2B.(1+0.01)×4.2
C.4.2×10+4.2×0.1
答案

4.2×1.01,

=4.2×(1+0.01),

=4.2×1+4.2×0.01,

=4.2+0.042,

=4.242;

故选:B.

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