Multiplication and Estimation Quiz

Which multiplication problem will yield the largest result when rounded to the nearest tens?

Which multiplication problem equals 450?

If you round 28 and 15 to the nearest tens before multiplying, what is the resulting product?

Which pair of numbers, when multiplied, does not equal 360?

What is the result of multiplying 36 by 13?

Which multiplication problem results in the highest product?

Which multiplication problem is calculated incorrectly?

What is the product of 24 and 14?

What is the result of 22 multiplied by 16?

Which of the following multiplications equals 800?

Multiplication and Estimation

When estimating the result of a multiplication problem, you can round the numbers to the nearest tens.
Rounding to the nearest tens involves looking at the ones digit of the number. If the ones digit is 5 or greater, round up to the next ten. If the ones digit is less than 5, round down to the previous ten.
To estimate the result of a multiplication problem, you can round both numbers to the nearest tens and then multiply the rounded numbers.
In the first set of examples, the number 28 can be rounded down to 30 and 15 can be rounded up to 20, since both numbers can be rounded closer to the tens place.

Multiplication Facts

Certain multiplication problems are helpful to memorize.
The problem 10 x 10 = 100 is an important factor to remember.
Multiplication by 10 is the same as adding a zero to the end of the original number.
Multiplication by 100 is the same as adding two zeroes to the end of the original number.
18 x 25 equals 450.
It is suggested to memorize this basic multiplication fact to aid in calculations and problem-solving.

Test your knowledge on multiplication and estimation techniques. This quiz covers rounding numbers to the nearest tens and understanding multiplication facts. Brush up on your skills and see how well you can estimate results!