Level 3
Estimating and comparing
1. Solve:
Asquareroomhasanareaof50squareft.Betweenwhichtwowholenumbersisitssidelength? 2. Solve:
Acubehasavolumeof30cubiccm.Betweenwhichtwowholenumbersisitsedge? 3. Solve:
Asquarehasanareaof20squarem.Estimateitssidetothenearestwholemeter. 4. Solve:
Onesquarehasanareaof49squarecmandabiggersquarehasanareaof64squarecm.Howmuchlongerisasideofthebiggersquare? 5. Solve:
Aladderreachesaheightwhosesquareis90.Istheheightmoreorlessthan9m? 6. Solve:
Acubehasavolumeof8cubicm.Ifeachedgeisdoubled,whatisthenewvolume? 7. Solve:
Asquarehasanareaof2squareunits.Isitssiderationalorirrational? 8. Solve:
Asquarefieldhasanareaof10000squarem.Howfarisawalkaroundit?