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