题目

用你喜欢的方法计算。 ①3.67×99+3.67 ②21÷2.5÷0.4 ③4.64+3.7×2 ④100-17.34-12.66 ⑤0.125×32×0.25 ⑥4.5×10.1 答案：①3.67×99+3.67=3.67×（99+1）=3.67×100=367；②21÷2.5÷0.4=21÷（2.5×0.4）=21÷1=21；③4.64+3.7×2=4.64+7.4=12.04；④100-17.34-12.66=100-（17.34+12.66）=100-30=70；⑤0.125×32×0.25=0.125×8×4×0.25=1×1=1；⑥4.5×10.1=4.5×（10+0.1）=4.5×10+4.5×0.1=45+0.45=45.45.

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