Rounding & Multiplying Multi-Digit Review

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What is rounding in mathematics?

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Rounding is the process of adjusting a number to make it simpler but keeping its value close to what it was. For example, rounding 4.6 to the nearest whole number gives 5.

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How do you round a number to the nearest ten?

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To round a number to the nearest ten, look at the digit in the ones place. If it is 5 or more, round up. If it is less than 5, round down. For example, 47 rounds to 50, while 42 rounds to 40.

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What is multiplication?

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Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times: 3 + 3 + 3 + 3 = 12.

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What is the product of 6 and 7?

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The product of 6 and 7 is 42.

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How do you multiply multi-digit numbers?

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To multiply multi-digit numbers, you can use the standard algorithm: multiply each digit of the bottom number by each digit of the top number, then add the results together.

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If you read 20 pages a day, how many pages do you read in a week?

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You read 140 pages in a week (20 pages x 7 days = 140 pages).

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What is the total production of toys if a company produces 1,234 toys per day for 28 days?

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The total production is 34,552 toys (1,234 toys x 28 days = 34,552 toys).

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What does it mean to round to the nearest whole number?

Back

Rounding to the nearest whole number means adjusting a decimal number to the closest whole number. For example, 3.87 rounds to 4.