Us Traditional Multiplication (Standard) (Page 2 of 2) in pdf

Us Traditional Multiplication (Standard) Page 2

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Date

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U.S. Traditional Multiplication (Standard)

First, multiply the ones digit in the bottom factor by the ones

digit in the top factor. Record any regrouping at the top of the

next place-value column. Then, multiply each of the remaining

digits in the bottom factor by each of the remaining digits in the

top factor, moving from right to left. Finally, if you have partial

products, add them to find the total product.

Example

Multiply 5 ones by 4 ones. (20 ones)

∗ 15

→

Rename 20 ones as 2 tens and 0 ones.

Record the 0 ones in the ones column.

Record the 2 tens at the top of the tens column.

Multiply 5 ones by 3 tens. (15 tens)

∗ 15

→

Add 2 tens. (15 tens + 2 tens = 17 tens)

170

Record the 17 tens.

Multiply 1 ten by 4 ones (40) and 1 ten by 3 tens (300).

∗

→

Record 340.

170

+ 340

Add the partial products to find the final product.

510

Check Your Understanding

Solve the following problems.

1. 54 ∗ 8

3. 62 ∗ 9

4. 257 ∗ 43

2. 70 × 3

6. 784 ∗ 46

8. 467 ∗ 124

5. 319 × 25

7. 519 × 37

Student Practice

Write your answers on a separate sheet of paper.

Us Traditional Multiplication (Standard) Page 2