1. 直接写出得数。
$0.7+0.9=$ $4.1-3.8=$ $14+0.78=$ $10-0.1=$
$14.6-0.34=$ $1.3+8.56=$ $0.8-0.55=$ $4-0.04=$
$30.5+3.05=$ $0.8-0.45=$ $0.78+2.2=$ $3.25+0.75=$
$0.7+0.9=$ $4.1-3.8=$ $14+0.78=$ $10-0.1=$
$14.6-0.34=$ $1.3+8.56=$ $0.8-0.55=$ $4-0.04=$
$30.5+3.05=$ $0.8-0.45=$ $0.78+2.2=$ $3.25+0.75=$
答案:
1. 1.6 0.3 14.78 9.9 14.26 9.86 0.25 3.96 33.55 0.35 2.98 4
2. 笔算。
$8.36-7.4=$ $7.4+12.86=$ $20-5.67=$
$18+4.36=$ $32.15-29.45=$ 验算 $0.14-0.037=$ 验算
$8.36-7.4=$ $7.4+12.86=$ $20-5.67=$
$18+4.36=$ $32.15-29.45=$ 验算 $0.14-0.037=$ 验算
答案:
2. 0.96 20.26 14.33 22.36 2.7 0.103
3. 怎样简便怎样算。
$4.57+3.17+3.43+5.83$ $12.7-4.8-5.2$
$9.4+0.3-6.4$ $21.63-(8.5+9.63)$
$8.54-5.96$ $27.38-5.34+2.62-4.66$
$4.57+3.17+3.43+5.83$ $12.7-4.8-5.2$
$9.4+0.3-6.4$ $21.63-(8.5+9.63)$
$8.54-5.96$ $27.38-5.34+2.62-4.66$
答案:
3. 17 2.7 3.3 3.5 2.58 20
查看更多完整答案,请扫码查看