400g= kg 32dm2= m2 0.5t= kg
4550m= km 2m57cm= m 4.34+5.56=
5.73+5.27= 8-1.3= 7.51-6.5= 6.9+2.32=
660÷10=
35×2=
35×20=
35×200=
450-100=
100÷4=
40×3=
600×50=
185+25=
342-99=
0.3×9= 2.5×0.4= 12.5×0.8= 1.51×100=
0.7×0.8= 0.6×0.5= 0.05×0.3= 480÷1000=