内容正文:
39
5
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1
./
P]^
(
+,
5
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3
5÷
8
15=
4÷67=
5
3÷
10
3=
1
2+
3
4=
2
3÷
16
27=
5
6×
9
4=
5
6×0.3=
5
9×
3
5=
4
7×4.9=
14
15×
5
7=
6
5÷12=
7
24÷
49
6=
d=5m r=( )dm r=7.4m d=( )m
r=5.6dm d=( )m r=1.25dm d=( )cm
r=( )dm d=42cm r=( )m d=20.8dm
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18
$%'()* *$% +
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10
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11
45×
4
5÷
2
9 32÷
8
5÷
4
3
23
45÷
47
15×
47
23
11
12÷
1
9+
5( )12 ×1911 101×99100 2022×20202021+ 12021
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6
$%'()* *$% +
40
!
2
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P
(1)
(
+,
5
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3.14×9=
3.14×10=
3.14×11=
3.14×12=
7
14÷
12
7=
24÷83=
3.14×24=
3.14×25=
3.14×30=
3.14×36=
2
5×
4
13=
12÷83=
2×0.2×3.14=
2×0.4×3.14=
2×3×3.14=
2×5×3.14=
19
40÷
19
20=
45×813=
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6
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18
$%'()* *$% +
(
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10
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5
11÷
10
11÷
3
4
7
9×
3
14×
5
6
9
10÷3×
15
2
21
40÷
1
10+( )35 56÷1-( )18 1113-11( )13 ×31333
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6
$%'()* *$% +
41
!
3
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P
(2)
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+,
5
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12.56÷3.14=
18.84÷3.14=
188.4÷3.14=
3×4+3.14=
5×3.14-3.14=
3.14×5×2=
62.8÷3.14=
125.6÷3.14=
157÷3.14=
6.28÷3.14÷2=
2×1.2×5=
3.14×4×0.25=
219.8÷3.14=
251.2÷3.14=
282.6÷3.14=
9.42÷3.14÷2=
3.14×5+10=
100+3.14×100=
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6
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x-27x=
3
4 5x-3×
5
21=
5
7
2
3x÷
1
4=12
sLMNIP
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6
$%'()* *$% +
42
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4
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PM
(1)
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+,
5
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0.62=
72=
( )12
2
=
60×45=
8
9×0.75=
0.6÷185=
0.82=
122=
( )34
2
=
1
14÷
2
7=
15
32÷
5
8=
7
39÷
7
78=
1.12=
202=
( )49
2
=
3
2×
5
4=
1.1×35=
9
16×0.8=
1.62=
502=
7( )15
2
=
11
8÷
3
4=
18
37÷0.9=
7
100×
25
7=
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6
$%&
24
$%'()* *$% +
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3.14×52 3.14×1.22 3.14×(5.8÷2)2
26
35÷
7
5-
8( )15 1112÷ 19+5( )12 ×1911 522×710+522×410
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6
$%'()* *$% +
43
!
5
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PM
(2)
(
+,
5
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0.32=
( )78
2
=
3.14×0.22=
14
15×
7
20=
16÷23=
9÷35=
92=
9( )10
2
=
3.14×0.82=
4
5÷12=
6-12=
63÷79=
112=
4( )15
2
=
3.14×42=
1
3+
1
5=
2
5÷
4
15=
17
15×60=
252=
13( )18
2
=
3.14×82=
9
10÷
3
5=
6
11×
5
12=
1
2×
2
3×
3
4=
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6
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24
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7
8+
13( )16 ÷1316 14×57÷14×57 36× 79+34-( )56
sLMNPM
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6
$%'()* *$% +
44
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6
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+,
5
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3.14×0.3=
9.42÷3.14=
3.14×0.7=
3.14×0.4×12=
19
20×
1