End of year Review 5th Math

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What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 129.257 to the nearest hundredth gives 129.26.

Front

What are composite numbers?

Back

Composite numbers are natural numbers greater than 1 that have more than two distinct positive divisors. For example, 6 and 22 are composite numbers.

Front

What is the formula for finding the volume of a cube?

Back

The volume of a cube is found using the formula V = side³, where 'side' is the length of one edge of the cube.

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How do you calculate the total cost of multiple items?

Back

To calculate the total cost, multiply the price of each item by the quantity purchased and then sum the costs. For example, 2 shirts at $7.25 each and 2 pairs of jeans at $24 each.

Front

What does a coupon do in shopping?

Back

A coupon reduces the total price of items purchased. For example, a $10 coupon reduces the total cost of clothes.

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What is a factor pair?

Back

A factor pair consists of two numbers that, when multiplied together, equal a given number. For example, (6, 22) is a factor pair of 132.

Front

What is the difference between prime and composite numbers?

Back

Prime numbers have exactly two distinct positive divisors (1 and itself), while composite numbers have more than two divisors.

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How do you find the discounted price after using a coupon?

Back

To find the discounted price, calculate the total cost of items, then subtract the coupon value from that total.

Front

What is the significance of cubic centimeters in volume measurement?

Back

Cubic centimeters (cm³) measure volume, indicating how much space an object occupies. For example, a cube with a volume of 729 cm³ can hold 729 small cubes of 1 cm³ each.

Front

What is division in mathematics?

Back

Division is the process of determining how many times one number is contained within another. For example, 1.2 ÷ 3 means how many times 3 fits into 1.2.