Question

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.

6.9 m

d.

2.9 m

Answer 1

\[\huge{2m+4.9m}\]\[(2+4.9)m\]\[(2.0+4.9)m\]\[(6.9)m\]\[\large{6.9m}\]

Answer 2

gotta remember significant figures though

since 2m only has 1 sig fig the solution should only have 1 sig fig

Answer 3

\(\color{#0cbb34}{\text{Originally Posted by}}\) kittybasil
\[\large{2m+4.9m}\]\[(2+4.9)m\]\[(2.0+4.9)m\]\[(6.9)m\]\[\large{6.9m}\]
\(\color{#0cbb34}{\text{End of Quote}}\)

\[\large{*\approx\color{red}{7.0m}}\]

Answer 4

7.0 still has 2 sig figs

final sol'n should just be 7