Open Up - Grade 8 - Mathematics - Unit 8 - Lesson 1

Find the area of each square. Each grid square represents 1 square unit.

Find the length of a side of a square if its area is:

81 square inches

Find the length of a side of a square if its area is:

\frac{4}{25} cm²

Find the length of a side of a square if its area is:

0.49 square units

Find the length of a side of a square if its area is:

m² square units

Find the length of a side of a square if its area is:

3 inches

Find the length of a side of a square if its area is:

7 units

Find the length of a side of a square if its area is:

100 cm

Find the length of a side of a square if its area is:

40 inches

Find the length of a side of a square if its area is:

x units

Evaluate (3.1⋅10^{4})⋅(2⋅10^{6}). Choose the correct answer:

Noah reads the problem, “Evaluate each expression, giving the answer in scientific notation.” The first problem part is: 5.4⋅10^{5}+2.3⋅10^{4}. Noah says, “I can rewrite 5.4⋅10^{5} as 54⋅10^{4}. Now I can add the numbers: 54⋅10^{4}+2.3⋅10^{4}-56.3⋅10^{4}.” Do you agree with Noah’s solution to the problem?

Select all the expressions that are equivalent to 3^{8}.