一、口算。
$18÷6=$
$3÷3=$
$21÷7=$
$5×4=$
$72÷9=$
$56÷7=$
$4×2=$
$9+38=$
$35÷5=$
$57-9=$
$30÷6=$
$36-8=$
$92-80=$
$36÷4=$
$63-4=$
$8×7=$
$64-8=$
$72÷8=$
$50-2=$
$25-9=$
$73-9+20=$
$54÷6+23=$
$7×7+5=$
$16÷8+20=$
$7+8×1=$
$25-45÷9=$
$8×6-40=$
$25÷5+26=$
$56-8-20=$
$2×8÷4=$
$18÷6=$
$3÷3=$
$21÷7=$
$5×4=$
$72÷9=$
$56÷7=$
$4×2=$
$9+38=$
$35÷5=$
$57-9=$
$30÷6=$
$36-8=$
$92-80=$
$36÷4=$
$63-4=$
$8×7=$
$64-8=$
$72÷8=$
$50-2=$
$25-9=$
$73-9+20=$
$54÷6+23=$
$7×7+5=$
$16÷8+20=$
$7+8×1=$
$25-45÷9=$
$8×6-40=$
$25÷5+26=$
$56-8-20=$
$2×8÷4=$
答案
1.3
2.1
3.3
4.20
5.8
6.8
7.8
8.47
9.7
10.48
11.5
12.28
13.12
14.9
15.59
16.56
17.56
18.9
19.48
20.16
21.84
22.54
23.54
24.22
25.15
26.20
27.8
28.31
29.28
30.4
2.1
3.3
4.20
5.8
6.8
7.8
8.47
9.7
10.48
11.5
12.28
13.12
14.9
15.59
16.56
17.56
18.9
19.48
20.16
21.84
22.54
23.54
24.22
25.15
26.20
27.8
28.31
29.28
30.4
二、(
16>(
32>(
45>(
13>(
64>(
5
)里最大能填几?16>(
5
)×3 (3
)×6<24 (3
)×5<2032>(
11
)+20 (42
)-20<23 (6
)×8<4945>(
7
)×6 (5
)×6<36 (4
)×7<3013>(
21
)-9 (35
)+30<66 (1
)×9<1864>(
7
)×8 (85
)-9<77 (8
)×3<25答案
1.5
2.3
3.3
4.11
5.42
6.6
7.7
8.5
9.4
10.21
11.35
12.1
13.7
14.85
15.8
2.3
3.3
4.11
5.42
6.6
7.7
8.5
9.4
10.21
11.35
12.1
13.7
14.85
15.8
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