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Knihovna

Open Up - Grade 8 - Mathematics - Unit 8 - Lesson 2

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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Otázka 1
1.

A square has an area of 81 square feet. Select all the expressions that equal the side length of this square, in feet.

Otázka 2
2.

Write the exact value of the side length, in units, of a square whose area in square units is:

36

Otázka 3
3.

Write the exact value of the side length, in units, of a square whose area in square units is:

37

Otázka 4
4.

Write the exact value of the side length, in units, of a square whose area in square units is:

\frac{100}{9}

Otázka 5
5.

Write the exact value of the side length, in units, of a square whose area in square units is:

\frac{2}{5}

Otázka 6
6.

Write the exact value of the side length, in units, of a square whose area in square units is:

0.0001

Otázka 7
7.

Write the exact value of the side length, in units, of a square whose area in square units is:

0.11

Otázka 8
8.

Square A is smaller than Square B. Square B is smaller than Square C.

The three squares’ side lengths are \sqrt{26}, 4.2, and \sqrt{11}.

What is the side length of Square A? Square B? Square C?

Otázka 9
9.

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

\frac{1}{5} cm

Otázka 10
10.

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

\frac{3}{7} units

Otázka 11
11.

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

\frac{11}{8} inches

Otázka 12
12.

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

0.1 meters

Otázka 13
13.

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

3.5 cm

Otázka 14
14.

Here is a table showing the areas of the seven largest countries.

How much more area is there in Russia than in Canada?

Otázka 15
15.

Here is a table showing the areas of the seven largest countries.

The Asian countries on this list are Russia, China, and India. The American countries are Canada, the United States, and Brazil. Which has the greater total area: the three Asian countries, or the three American countries?

Otázka 16
16.

Select all the expressions that are equivalent to 10^{-6}.