Math Recap

What is the formula for area of a circle?

• pi x D

• pi x r2

• 2pi x r

• pi x D2

What is the diameter of this circle?

• 6 cm

• 24 cm

• 12 cm

• 24 cm

What is the area of this square?

• 50 cm

• 10 cm

• 20 cm

• 25 cm

What is the perimeter of this square?

• 25 cm

• 5 cm

• 10 cm

• 20 cm

1 cm = .......... mm

• 100

• 10

• 0,01

• 0,1

What is the length in millimeters (mm)?

• 11,6 mm

• 1,16 mm

• 116 mm

• 0,116 mm

The ruler is in centimeters (cm), what is the length of the red object in millimeter (mm)?

• 6 mm

• 60 mm

• 61 mm

• 610 mm

What is the area of this rectangle?

• 9 m

• 18 m

• 20 m

• 36 m

Diana is 30 kg. Se is 10 kg lighter than Lucy. How heavy is Lucy?

• 20 kg

• 40 kg

• 10 kg

• 50 kg

Which item is the lightest?

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