we know that
A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers
case a) We round the number to the nearest hundred
so
[tex] 196 [/tex] Round up is equal to [tex] 200 [/tex]
[tex] 482 [/tex] Round up is equal to [tex] 500 [/tex]
Find the estimate sum
[tex] 200+500=700 [/tex]
case b) We round the number to the nearest tens
so
[tex] 196 [/tex] Round up is equal to [tex] 200 [/tex]
[tex] 482 [/tex] Round down is equal to [tex] 480 [/tex]
Find the estimate sum
[tex] 200+480=680 [/tex]
