Third Grade Math Review

Front

What is the formula for calculating the perimeter of a rectangle?

Back

The perimeter (P) of a rectangle can be calculated using the formula P = 2(length + width).

Front

If a yard is 40 feet long and 5 feet less wide, what is the width of the yard?

Back

The width of the yard is 35 feet (40 feet - 5 feet).

Front

How do you convert liters to milliliters?

Back

To convert liters to milliliters, multiply the number of liters by 1000 (1 liter = 1000 milliliters).

Front

What fraction is represented by the decimal 0.5?

Back

The decimal 0.5 is represented by the fraction ½.

Front

What is the value of 30 in terms of tens and units?

Back

30 can be expressed as 3 tens and 0 units.

Front

How do you find the area of a rectangle?

Back

The area (A) of a rectangle can be calculated using the formula A = length × width.

Front

What is the relationship between milliliters and cubic centimeters?

Back

1 milliliter (mL) is equal to 1 cubic centimeter (cm³).

Front

How do you calculate the total cost if an item costs $15 and you buy 3 items?

Back

Total cost = price per item × number of items = $15 × 3 = $45.

Front

What is the definition of a fraction?

Back

A fraction represents a part of a whole and is expressed as a numerator (top number) over a denominator (bottom number).

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, add the numerators and keep the denominator the same.