Basic Mathematics

Multiplication of Whole Numbers

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Multiplication of Whole Numbers
Factor - Factors are the numbers multiplied in a multiplication problem.

Product - The product is the answer in a multiplication problem.
Multiplication of Whole Numbers
To find the product, multiply each digit in the top factor by each digit in the bottom factor. Begin with the ones place and regroup as needed.
Multiplication of Whole Numbers
Multiplication of Whole Numbers
You can check multiplication by reversing the order of the factors and multiplying again.
Multiplication of Whole Numbers
Click on the product.
  43
× 5
205
215
2,015
48
None of these
Question 1 of 8
5×3=15 ones. Write 5 in the ones place, and regroup the 1 ten. Try again.
The product is 215.
5×3=15 ones. Write 5 in the ones place, and regroup the 1 ten. Try again.
48 is the sum of these numbers, not the product. Try again.
One of these numbers is the product. Try again.
Multiply 5×3 ones and 5×4 tens. Regroup as needed.
Multiplication of Whole Numbers
Click on the product.
    56
× 23
280
1,388
1,298
79
None of these
Question 2 of 8
The second partial product is 1120, not 112. Try again.
The partial products are 168 and 1120. Add these two partial products. Try again.
The second partial product are 168 and 1120. Add these two partial products. Try again.
79 is the sum of these numbers, not the product. Try again.
The product is 1,288.
Multiply 3×56 and 20×56. Add the partial products.
Multiplication of Whole Numbers
Click on the product.
    66
× 66
4,356
132
792
6,666
None of these
Question 3 of 8
The product is 4,356.
132 is the sum of these numbers, not the product. Try again.
The second partial product is 3960, not 396. Try again.
The partial products are 396 and 3960. Add these two partial products. Try again.
One of these numbers is the product. Try again.
Multiply 6×66 and 60×66. Add the partial products.
Multiplication of Whole Numbers
Click on the product.
  842
× 25
5,894
867
20,050
21,050
None of these
Question 4 of 8
The second partial product is 16840, not 1684. Try again.
867 is the sum of these numbers, not the product. Try again.
The partial product are 4210 and 16840. Add these two partial products. Try again.
The product is 21,050.
One of these numbers is the product. Try again.
Multiply 5×842 and 20×842.Add the partial products.
Multiplication of Whole Numbers
There are four questions remaining. In each of these questions, the multiplication is presented in horizontal form. You should line the numbers up in vertical columns before trying to find the product.
Multiplication of Whole Numbers
Click on the product.
9 × 198 = ________
1,872
207
1,682
1,989
None of these
Question 5 of 8
The ones digit is correct. To get the tens, multiply 9×9 and add the 7 tens regrouped from the previous step. Try again.
207 is the sum of these numbers, not the product. Try again.
The ones and tens digit are correct. To get the hundreds, multiply 9×1 and add the 8 hundreds regrouped from the previous step. Try again.
Multiply each digit in 198 by 9, beginning with 9×8=72. Try again.
The product is 1,782.
Write the numbers vertically with the ones digits lined up. Then multiply.
Multiplication of Whole Numbers
Click on the product.
4473 × 6 = ________
25,828
24,838
26,838
44,736
None of these
Question 6 of 8
The ones digit is correct. To get the tens, multiply 6×7 and add the 1 ten regrouped from the previous step. Try again.
The thousands digit is not correct. To get the thousands, multiply 6×4 and add the 1 thousand regrouped from the previous step. Try again.
The product is 26,838.
Multiply each digit in 4473 by 6, beginning with 6×3=18. Try again.
One of these numbers is the product. Try again.
Write the numbers vertically with the ones digits lined up. Then multiply.
Multiplication of Whole Numbers
Click on the product.
23 × 33 = ________
736
659
759
138
None of these
Question 7 of 8
Multiply each digit in the top factor by digit in the bottom factor. Begin with 3×3=9 ones. Try again.
The ones and tens digit are correct. Check your addition of the partial products. Try again.
The product is 759.
The second partial product is 690, not 69. Try again.
One of these numbers is the product. Try again.
Write the numbers vertically with the ones digits lined up. Then multiply.
Multiplication of Whole Numbers
Click on the product.
76 × 29 = ________
2,104
2,204
1,204
836
None of these
Question 8 of 8
The hundreds digit is not correct. You may have added the partial products incorrectly. Try again.
The product is 2,204.
The thousands digit is not correct. You may have added the partial products incorrectly. Try again.
The second partial product is 1520, not 152. Try again.
One of these numbers is the product. Try again.
Write the numbers vertically with the ones digits lined up. Then multiply.
Multiplication of Decimals