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一、口算。
$37-9=$
$20+59=$
$2×3-6=$
$5×5=$
$6×4=$
$3×4-9=$
$20+70=$
$3×3=$
$2×6-10=$
$66+7=$
$5+5=$
$1×6-1=$
$6×2=$
$1×6=$
$4×5+10=$
$62-5=$
$93-20=$
$6×6+5=$
$5×4=$
$2×4=$
$3×4+8=$
$1×5=$
$27+5=$
$2×2+9=$
$42-7=$
$5×3=$
$3×3+4=$
$3×4=$
$18-9=$
$6×6-7=$
$37-9=$
$20+59=$
$2×3-6=$
$5×5=$
$6×4=$
$3×4-9=$
$20+70=$
$3×3=$
$2×6-10=$
$66+7=$
$5+5=$
$1×6-1=$
$6×2=$
$1×6=$
$4×5+10=$
$62-5=$
$93-20=$
$6×6+5=$
$5×4=$
$2×4=$
$3×4+8=$
$1×5=$
$27+5=$
$2×2+9=$
$42-7=$
$5×3=$
$3×3+4=$
$3×4=$
$18-9=$
$6×6-7=$
答案
1.28
2.79
3.0
4.25
5.24
6.3
7.90
8.9
9.2
10.73
11.10
12.5
13.12
14.6
15.30
16.57
17.73
18.41
19.20
20.8
21.20
22.5
23.32
24.13
25.35
26.15
27.13
28.12
29.9
30.29
2.79
3.0
4.25
5.24
6.3
7.90
8.9
9.2
10.73
11.10
12.5
13.12
14.6
15.30
16.57
17.73
18.41
19.20
20.8
21.20
22.5
23.32
24.13
25.35
26.15
27.13
28.12
29.9
30.29
二、在（）里填合适的数。
5×(
(
6×(
(
(
5×(
5
)=25 (1
)×5=5 (6
)×4=24(
1
)×3=3 2×(5
)=10 (3
)×6=186×(
1
)=6 3×(2
)=6 (6
)×5=30(
3
)×3=9 (4
)×4=16 3×(5
)=15(
6
)×2=12 (5
)×4=20 6×(6
)=36答案
1.5
2.1
3.6
4.1
5.5
6.3
7.1
8.2
9.6
10.3
11.4
12.5
13.6
14.5
15.6
2.1
3.6
4.1
5.5
6.3
7.1
8.2
9.6
10.3
11.4
12.5
13.6
14.5
15.6
