一、口算。
$37+60=$
$32÷4=$
$6×9-23=$
$75-26=$
$6×7=$
$46+28-20=$
$28÷4=$
$14÷7=$
$9×8-36=$
$64÷8=$
$25+28=$
$21÷7×6=$
$4×7=$
$15÷3=$
$28÷7+27=$
$20÷4=$
$5×8=$
$2×3×8=$
$5×6=$
$82-29=$
$10÷2×7=$
$38+41=$
$9×4=$
$46+26+9=$
$18÷3=$
$16÷8=$
$7×8+36=$
$3×7=$
$32-18=$
$81÷9×8=$

1.97 2.8 3.31
4.49 5.42 6.54
7.7 8.2 9.36
10.8 11.53 12.18
13.28 14.5 15.31
16.5 17.40 18.48
19.30 20.53 21.35
22.79 23.36 24.81
25.6 26.2 27.92
28.21 29.14 30.72

二、在$□$里填合适的数。
$89÷□=9······8$
$25÷□=8······1$
$51÷□=6······3$
$13÷□=2······1$
$54÷□=7······5$
$33÷□=4······1$
$20÷□=3······2$
$32÷□=5······2$
$46÷□=6······4$
$69÷□=9······6$
$64÷□=7······1$
$47÷□=9······2$
$37÷□=4······5$
$52÷□=6······4$
$75÷□=8······3$

1.9 2.3 3.8
4.6 5.7 6.8
7.6 8.6 9.7
10.7 11.9 12.5
13.8 14.8 15.9