Find each sum or difference. round to the place value of the less precise measurement.

2 m + 4.9 m

a.7 m
b.10 m
c.2.9 m

The first thing you need to do is combine like terms, so you just add 4.9 and 2 together. This gives you 6.9 m.
Round up the '0.9' to a whole number, which is 1.0.
This gives you your A) 7 m.
Hope this helps!! :)