Page 3 - math primary 2 second part_Neat
P. 3
31 Estimated to ..…
+ 78 Estimated to + …..
……...
…..
Second : estimate 574
574 contain 3 digit .cancel the ones and tens
and keep the hundred as it is , then 574
estimated to 500
E.X (2) Estimate the following :
421 + 268 400
+200
600
340+ 120 ……
+…….
56
