直接寫出得數(shù):
35+0.45=

150×6=

0.72-0.28=

0.57+0.9=
8+0.12=0.6-0.37=10-0.09=5÷1000=

解:35+0.45=35.45,150×6=900,0.72-0.28=0.44,0.57+0.9=1.47,
8+0.12=8.12,0.6-0.37=0.23,10-0.09=9.91,5÷1000=0.005,
分析:我們運(yùn)用小數(shù)的加減乘除法的計(jì)算法則進(jìn)行計(jì)算,在計(jì)算加減時(shí),小數(shù)點(diǎn)要對(duì)齊,小數(shù)點(diǎn)對(duì)齊了數(shù)位也就對(duì)齊了,5÷1000,只要把小數(shù)點(diǎn)向左移動(dòng)3位即可.
點(diǎn)評(píng):本題是一道簡(jiǎn)單的小數(shù)四則混合運(yùn)算的題目,考查了小數(shù)加減法的計(jì)算法則的應(yīng)用情況及學(xué)生的計(jì)算能力.
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