2026年天天练口算四年级数学下册人教版第56页答案
7
$0.35 + 0.65 =$ $5.4 + 3.21 =$ $6.4 - 3.6 =$


$3.2 + 1.8 =$ $5.6 + 4 =$ $4.5 + 1.7 =$
$8.6 - 1.9 =$ $3.84 + 0.36 =$ $4.1 - 2.4 =$
$0.26 + 0.35 =$ $12.5 + 0.25 =$ $3.8 - 2.9 =$
$7.8 - 4.9 =$ $1.9 + 2.2 =$ $9.84 - 3.2 =$
$2.7 + 1.87 =$ $5.2 + 0.86 =$ $8.3 - 3.5 =$
$9.2 - 1.8 =$ $3.8 + 1.34 =$ $9.65 - 4.8 =$
$4.68 - 3.9 =$ $7.26 + 0.22 =$ $7.1 - 6.7 =$
$3.25 + 0.5 =$ $2.41 - 1.9 =$ $5.4 + 6.45 =$
$3.17 + 0.33 =$ $3.2 - 1.7 =$ $25.32 - 2.2 =$
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答案

$1.$
$6.1+12.7=18.8$;
$47.49+12.7=60.19$;
$42.1-5.6=36.5$;
$27.32-5.6=21.72$。
$2.$
$9.88+26.5=36.38$;
$14.9+26.5=41.4$;
$3.55+26.5=30.05$;
$46.7+26.5=73.2$;
$75.3-14.1=61.2$;
$36.15-14.1=22.05$;
$27.2-14.1=13.1$;
$16.53-14.1=2.43$。
$3.$
$0.35+0.65=1$;
$5.4+3.21=8.61$;
$6.4-3.6=2.8$;
$3.2+1.8=5$;
$5.6+4=9.6$;
$4.5+1.7=6.2$;
$8.6-1.9=6.7$;
$3.84+0.36=4.2$;
$4.1-2.4=1.7$;
$0.26+0.35=0.61$;
$12.5+0.25=12.75$;
$3.8-2.9=0.9$;
$7.8-4.9=2.9$;
$1.9+2.2=4.1$;
$9.84-3.2=6.64$;
$2.7+1.87=4.57$;
$5.2+0.86=6.06$;
$8.3-3.5=4.8$;
$9.2-1.8=7.4$;
$3.8+1.34=5.14$;
$9.65-4.8=4.85$;
$4.68-3.9=0.78$;
$7.26+0.22=7.48$;
$7.1-6.7=0.4$;
$3.25+0.5=3.75$;
$2.41-1.9=0.51$;
$5.4+6.45=11.85$;
$3.17+0.33=3.5$;
$3.2-1.7=1.5$;
$25.32-2.2=23.12$。