Question

240 mm²=........cm²

0,4 dm²=........cm²

452000 cm²=.........m²

0,2ha=......m²

0,07km²=.....m²

14m²=.......a

0,4ha=....a

1,35ha=..........a

174500m²=......ha

30a=.......ha

Zad.2 (!!W TYM ZADANIU WSZYSTKO MUSI BYĆ POSKRACANE!!)

a) 9i1/7*1i1/8:2i2/3=

b) 2i5/8*1i1/3=

c) 2i2/5-3²:1i1/2=

d)1,25*(-3i1/4)*(-8)=

Answer 1

240 mm²=2,4 cm²

0,4 dm²= 40 cm²

452 000 cm ²=45,2 m²

0,2 ha=2000m²

0,07 km²=70 000m²

14 m²=0,14 a

0,4 ha=40 a

1,35 ha=135 a

174 500 m²=17,45 ha

30 a=0,3ha

 

2) a)   9 i1/7·1 i 1/8:2 2/3=64/7·9/8:8/3=72/7·3/8=27/7=3 i 6/7

 

b)2 i5/8·1 i 1/3=21/8·4/3=7/2=3 i1/2

 

c) 2 i2/5-3²:1 i1/2=2 i2/5-9:3/2=2 i2/5-9·2/3=2 i2/5-6=2 i2/5-5 i5/5=-3 i3/5

 

d) 1,25·(-3 i1/4)·(-8)=5/4·(-13/4)·(-8)=65/2=32 i1/2

 

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