题目内容

【题目】请你口算。每题0.5分,共计8分

0.38+0.06= (155+20)-65= 64.2+5.7= 543-27-73=

0.97-0.09= 12.8-9.86= 17.05-4.58 = 9800÷25÷4=

3.5+0.6= 5-0.15= 4.35+5.36= 99×66+66=

0.81+0.09= 0÷78= 50-20÷5= 35×25×4=

【答案】0.44,110,69.9,443,0.88,2.94,12.47,98,4.1,4.85,9.71,6600,0.9,0,46,3500

【解析】

解:0.38+0.06=0.44(155+20)-65=11064.2+5.7=69.9543-27-73=443

0.97-0.09=0.8812.8-9.86=2.9417.05-4.58=12.479800÷25÷4=98

3.5+0.6=4.15-0.15=4.854.35+5.36=9.7199×66+66=9900

0.81+0.09=0.90÷78=050-20÷5=4635×25×4=3500

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