一、口算。
6×4=
6×9=
4×9÷6=
8×5=
18÷9=
4×6÷3=
48÷8=
36÷6=
28÷4×5=
6×2=
45÷5=
35÷5×6=
30÷6=
7×9=
8×3÷6=
27÷3=
20÷4=
3×3×9=
36÷4=
24÷8=
64÷8×3=
7×5=
72÷8=
49÷7×2=
27÷9=
7×8=
3×2×9=
5×9=
54÷6=
42÷7×6=
6×4=
6×9=
4×9÷6=
8×5=
18÷9=
4×6÷3=
48÷8=
36÷6=
28÷4×5=
6×2=
45÷5=
35÷5×6=
30÷6=
7×9=
8×3÷6=
27÷3=
20÷4=
3×3×9=
36÷4=
24÷8=
64÷8×3=
7×5=
72÷8=
49÷7×2=
27÷9=
7×8=
3×2×9=
5×9=
54÷6=
42÷7×6=
答案
1.24
2.54
3.6
4.40
5.2
6.8
7.6
8.6
9.35
10.12
11.9
12.42
13.5
14.63
15.4
16.9
17.5
18.81
19.9
20.3
21.24
22.35
23.9
24.14
25.3
26.56
27.54
28.45
29.9
30.36
2.54
3.6
4.40
5.2
6.8
7.6
8.6
9.35
10.12
11.9
12.42
13.5
14.63
15.4
16.9
17.5
18.81
19.9
20.3
21.24
22.35
23.9
24.14
25.3
26.56
27.54
28.45
29.9
30.36
二、()里最大能填几?
60>(
56>(
72>9×(
50>(
45>(
60>(
6
)×9 (5
)×9<47 6×(5
)<3656>(
7
)×7 (8
)×8<66 (6
)×5<3472>9×(
7
) 9×(3
)<30 8×(6
)<5050>(
8
)×6 (5
)×7<37 (6
)×7<4545>(
8
)×5 9×(3
)<36 (8
)×8<72答案
1.6
2.5
3.5
4.7
5.8
6.6
7.7
8.3
9.6
10.8
11.5
12.6
13.8
14.3
15.8
2.5
3.5
4.7
5.8
6.6
7.7
8.3
9.6
10.8
11.5
12.6
13.8
14.3
15.8
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