Estimate the following products: 28 × 67

The given number is 28 × 67 . We have to round a number to the nearest tens, see the digit at the ones place. We know that, If ones place digit is 5 or greater than 5 , then the number will be rounded up. If ones place digit is 4 or less, then the number will be rounded down. As the digit in the ones place is 8 and 8 > 5 . As the digit in the ones place is 7 and 7 > 5 . So, 28 is rounded up to 30 . 67 is rounded up to 70 Finding the product, 30 × 70 = 2100 Hence, the answer is 2100 .

Estimate the following products: 79 × 192

The given number is 79 × 192 We have to round a number to the nearest tens, see the digit at the ones place. We know that, If ones place digit is 5 or greater than 5 , then the number will be rounded up. If ones place digit is 4 or less, then the number will be rounded down. As the digit in the ones place is 9 and 9 > 5 . As the digit in the ones place is 2 and 2 < 5 . So, 79 is rounded up to 80 . 192 is rounded up to 190 Finding the product, 80 × 190 = 15200 Hence, the answer is 15200 .

Estimate the following products: 92 × 697

The given number is 92 × 697 We have to round a number to the nearest tens, see the digit at the ones place. We know that, If ones place digit is 5 or greater than 5 , then the number will be rounded up. If ones place digit is 4 or less, then the number will be rounded down. As the digit in the ones place is 2 and 2 < 5 . As the digit in the ones place is 7 and 7 > 5 . So, 92 is rounded up to 90 . 697 is rounded up to 700 Finding the product, 90 × 700 = 63000 Hence, the answer is 63000 .