问题 解答题
口算.
0.3÷2=
0.42+6=0.46+23=1.4×0.5=
7.2÷0.12=1.1×2.1=3.9÷1.3=0.68÷4=
0.36÷0.04=0.49÷0.7=3.6×2=0.78÷0.3=
答案

0.3÷2=0.150.42+6=6.420.46+23=23.461.4×0.5=0.7
7.2÷0.12=601.1×2.1=2.313.9÷1.3=30.68÷4=0.17
0.36÷0.04=90.49÷0.7=0.73.6×2=7.20.78÷0.3=2.6

单项选择题 B型题
单项选择题