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MULTIPLY AND DIVIDE 2 & 3 DIGITS BY 1 DIGIT

Unit Overview

In this unit, you examine the multiplication of two and three digit numbers times a single digit number. You will then look at division. First, you will divide two digit numbers by a single digit and then you will divide three digit numbers by a single digit.

Whole Number Multiplication

Line up the numbers from right to left.

Click on the link to watch the video "Multiplying: 2 digits by 1 digit".

Click on the link to watch the video "Multiplying: 3 digits by 1 digit".

Click on the link to watch the video "Multiplying: 2 digits by 1 digit (with carrying)".

Click on the link to watch the video "Multiplying: 3 digits by 1 digit (with carrying)".

Whole Number Division - Two Digits Divided by One Digit

12 ÷ 2 = 6 or 2 × 6 = 12 Write the 12 under the dividend and then subtract. If you have a 0, there is no remainder. You will do remainders in another unit.

The dividend is the number to be divided. The divisor is the number that divides. The quotient is the answer.

Click on the link to watch the video "Dividing numbers: intro to long division".

Whole Number Division - Three Digits Divided by One Digit

The dividend will now have 3 digits.

Example:

	How many set of 2 will go into 1? NONE! Since the first number can't be divided into, use the first two numbers. How many sets of 2 will go into 13? 6 sets of 2 equals 12. Place the 12 under the 13 and subtract.

	There is another number in the divided; the 4. Look at the arrow. Move the 4 down beside the 1. Now there is a 14.

	Divide again. How many sets of 2 will go into 14? 7 sets of 2 equals 14. Place the 14 under the 14 and subtract.

	14 – 14 = 0. When all the numbers in the dividend are used and there is a 0, the dividing is finished. There is no remainder and the quotient is 7.

Click on the link to watch the video "Dividing numbers: long division example ".

Student Practice

	Multiply Worksheet

	Division Worksheet