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2017-06-16 16:17
620
0
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10
1 2 .3. 5 ( )
2. 18 24
3. 0.5
4. 6
5.
6.
10
1.
2. 1
3.
4.
5.
10
1. 9 16 .A 1
B 9 C 3
2. A B C
3.
A 1 B 1
C 1 1
4. 1cm
A 6 B 4 C 8
5. 48cm cm A 12
B 8 C 4
1. 10
0.45÷0.9= 3.2×2.5= 0.5÷0.5= 3×0.5= 15÷1.5=
30÷0.6= 0.9÷0.8×0= 0.5×0.7= 0.3×23=
3.5÷0.005=
2. 12
25.84÷17= 36.5÷1.3
6.05×4.76= 32.1×1.98=
3. 12
x+1.2=8 4x+7x=12.1 x-6.4=7.6 7 x-2 =14
4. 16
101×7.8 0.25×6.3×4 3.7×1.3+6.3×1.3 1.25×0.7×8
20
1. 3.
6m 1.2m
6dm 1.5m
2. 50m 5. 51dm2
30m 50cm
3cm