Math Topic 4 Review

Front

What is the formula to calculate the perimeter of a square?

Back

Perimeter = side length x 4

Front

If each brick is 0.21 meters long and there are 60 bricks, how do you estimate the total length?

Back

Total length = number of bricks x length of each brick

Front

What does 10^3 equal in terms of multiplication?

Back

10^3 = 1000, so 0.46 x 1000 = 460

Front

What happens to the decimal point when you multiply a decimal by 10?

Back

The decimal moves one place to the right.

Front

How do you calculate the total cost of postcards if each costs $0.45 and you buy 15?

Back

Total cost = cost per postcard x number of postcards

Front

What is the perimeter of a square with each side measuring 2.3 cm?

Back

Perimeter = 2.3 cm x 4 = 9.2 cm

Front

If you multiply 0.33 by 100, where does the decimal point move?

Back

The decimal moves two places to the right.

Front

What is the total length of 60 bricks each measuring 0.21 meters?

Back

Total length = 60 x 0.21 = 12.6 meters (estimate to 12 meters).

Front

What is the cost of sending 15 postcards at $0.45 each?

Back

Total cost = 15 x 0.45 = $6.75

Front

What is the relationship between powers of 10 and decimal movement?

Back

Each power of 10 moves the decimal point one place to the right.