口算:
0.3÷0.1=

3.25×4=

15.5+0.45=

23×0.02=

0+2÷4=
302= 0.43= 3.05÷100= 1-0.99= 4.5÷3×3=
分析:根據(jù)小數(shù)的加減乘除與有理數(shù)的乘方的計算方法進(jìn)行計算即可.
解答:解:
0.3÷0.1=3,
3.25×4=13,

15.5+0.45=15.95,

23×0.02=0.46,

0+2÷4=0.5,
302=900, 0.43=0.064, 3.05÷100=0.0305, 1-0.99=0.01, 4.5÷3×3=4.5.
點(diǎn)評:本題主要考查小數(shù)的口算,看清數(shù)據(jù)和運(yùn)算符號進(jìn)行計算即可.
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