一、口算。(每题1分,共36分)
$7-3=$
$14+5=$
$8+10=$
$19-6=$
$5+4=$
$8-3=$
$10-6=$
$17-7=$
$3+0=$
$10-9=$
$6+10=$
$7-7=$
$6-0=$
$12+4=$
$5-5=$
$18-4=$
$17-5=$
$4-0=$
$3+7=$
$8+11=$
$19-4=$
$7-5=$
$10-7=$
$11+6=$
$19-8+2=$
$12-2+4=$
$3+7+8=$
$10-6-4=$
$12-10+8=$
$14-4-3=$
$12+3-10=$
$6+4+2=$
$5-3+17=$
$19-5-4=$
$4+6+3=$
$13-3-5=$
$7-3=$
$14+5=$
$8+10=$
$19-6=$
$5+4=$
$8-3=$
$10-6=$
$17-7=$
$3+0=$
$10-9=$
$6+10=$
$7-7=$
$6-0=$
$12+4=$
$5-5=$
$18-4=$
$17-5=$
$4-0=$
$3+7=$
$8+11=$
$19-4=$
$7-5=$
$10-7=$
$11+6=$
$19-8+2=$
$12-2+4=$
$3+7+8=$
$10-6-4=$
$12-10+8=$
$14-4-3=$
$12+3-10=$
$6+4+2=$
$5-3+17=$
$19-5-4=$
$4+6+3=$
$13-3-5=$
答案
1.4 2.19 3.18 4.13 5.9 6.5 7.4 8.10 9.3 10.1 11.16 12.0 13.6 14.16 15.0 16.14 17.12 18.4 19.10 20.19 21.15 22.2 23.3 24.17 25.13 26.14 27.18 28.0 29.10 30.7 31.5 32.12 33.19 34.10 35.13 36.5
二、在□里填合适的数。(每题1分,共12分)
3+□=13
4+□=17
19-□=13
1+□=7
□+6=10
□+12=18
10-□=5+3
3+□=16-2
4+□=10+8
□+10=12
11+7=5+□
2+4+□=10
3+□=13
4+□=17
19-□=13
1+□=7
□+6=10
□+12=18
10-□=5+3
3+□=16-2
4+□=10+8
□+10=12
11+7=5+□
2+4+□=10
答案
1.10 2.13 3.6 4.6 5.4 6.6 7.2 8.11 9.14 10.2 11.13 12.4
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