Rounding Grade 7

Sofia is measuring the diameter of a circular table and finds it to be approximately 3.14159 meters. If she rounds the diameter to the nearest whole number, what will it be?

• 4

• 3

• 3.5

• 2

Answer explanation

The question asks for the diameter of a circular table, which Sofia measured as approximately 3.14159 meters, to be rounded to the nearest whole number. The correct answer is 3, as rounding rules state that numbers less than 0.5 are rounded down, while numbers 0.5 and above are rounded up. Therefore, 3.14159 is rounded down to 3.

Aiden bought a toy for $7.89. If he wants to round the price to the nearest tenth, how much would it be?

• 7.89

• 8.0

• 7.9

• 7.8

Answer explanation

The question asks to round the price of the toy Aiden bought to the nearest tenth. The price of the toy is $7.89. When rounding to the nearest tenth, we look at the hundredths place. If it's 5 or more, we round up. Here, 9 is in the hundredths place, so we round up the tenths place (8) by one, making it 9. Therefore, the rounded price is $7.9.

Isabella, Anaya, and Amelia are comparing the weights of their pet hamsters. Isabella's hamster weighs 0.456 kg. If they round this weight to the nearest hundredth, what would it be?

• 0.47 kg

• 0.50 kg

• 0.46 kg

• 0.45 kg

Answer explanation

To round Isabella's hamster's weight to the nearest hundredth, we look at the thousandth place (6). Since it is greater than or equal to 5, we round up the hundredth place (5) by 1. So, the rounded weight is 0.46 kg, which is the correct choice.

Arjun has 9.8765 apples. If he rounds the number of apples to the nearest whole number, how many apples does he have?

• 9

• 10

• 9.5

• 9.9

Answer explanation

In the question, Arjun has 9.8765 apples and we need to round it to the nearest whole number. When rounding, if the decimal part is 0.5 or greater, we round up, otherwise, we round down. In this case, the decimal part is 0.8765, which is less than 0.5, so we round down to 9. Therefore, Arjun has 9 apples.

Anaya, Priya, and Liam are baking a cake. The recipe calls for 2.3456 cups of sugar. If they want to round this to the nearest tenth, how many cups of sugar will they use?

• 2.34

• 2.4

• 2.35

• 2.3

Answer explanation

The question asks to round the quantity of sugar, which is 2.3456 cups, to the nearest tenth. When rounding to the nearest tenth, we look at the hundredths place. If the hundredths digit is 5 or more, we round up. Here, the hundredths digit is 4, but the thousandths digit is 5, which makes us round up the hundredths place. Therefore, the rounded quantity of sugar they will use is 2.4 cups.

Ethan, Harper, and Oliver are comparing the weights of their pet hamsters. Ethan's hamster weighs 0.98765 kg. If they round this weight to the nearest hundredth, what would it be?

• 1.00 kg

• 0.98 kg

• 0.97 kg

• 0.99 kg

Answer explanation

The question asks to round the weight of Ethan's hamster, which is 0.98765 kg, to the nearest hundredth. When rounding to the nearest hundredth, we look at the digit in the thousandths place. If it's 5 or more, we round up. Here, the digit in the thousandths place is 7, so we round up the hundredths place from 8 to 9, making the weight 0.99 kg.

Sofia has 4.56789 apples. If she rounds the number of apples to the nearest whole number, how many apples does she have?

• 5

• 4

• 4.5

• 4.6

Answer explanation

The question asks to round the number of apples Sofia has to the nearest whole number. The number of apples she has is 4.56789. When rounding to the nearest whole number, we look at the first digit after the decimal. If it's 5 or more, we round up. If it's less than 5, we round down. In this case, it's less than 5, so we round down to 4.

Owen, Ellie, and Lucas are splitting a pizza. Owen cuts a slice that is 1.23456 of the whole pizza. If they decide to round Owen's slice to the nearest tenth, what would it be?

• 1.24

• 1.23

• 1.2

• 1.3

Answer explanation

The question asks to round Owen's slice of pizza, which is 1.23456, to the nearest tenth. When rounding to the nearest tenth, we look at the digit in the hundredths place. If it's 5 or more, we round up. If it's less than 5, we round down. In this case, the digit in the hundredths place is 3, which is less than 5, so we round down to 1.2.

Noah bought a toy car for $0.12345. If he wants to round the price to the nearest hundredth, how much will he pay?

• $0.10

• $0.12

• $0.13

• $0.11

Abigail has a score of 6.78901 in a game. If her score is rounded to the nearest whole number, what will be her new score?

• 7

• 6.7

• 6

• 6.8