Multiply Two Digit by One Digit (20-3-2020)

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Front

What does it mean to multiply a two-digit number by a one-digit number?

Back

It means to take a two-digit number and multiply it by a single-digit number, which can be done by breaking the two-digit number into tens and ones.

Front

What is the first step in multiplying a two-digit number by a one-digit number?

Back

The first step is to multiply the one-digit number by the ones place of the two-digit number.

Front

If you multiply 23 by 4, what do you do first?

Back

First, multiply 4 by the ones place (3): 4 x 3 = 12.

Front

What do you do after multiplying the ones place in a two-digit by one-digit multiplication?

Back

After multiplying the ones place, you multiply the one-digit number by the tens place of the two-digit number.

Front

In the multiplication of 23 by 4, what is the next step after multiplying the ones place?

Back

After multiplying the ones place (3), you multiply the tens place (2) by 4: 4 x 2 = 8.

Front

What do you do with the results of the ones and tens place multiplications?

Back

You combine the results, making sure to carry over any values if the ones place result is 10 or more.

Front

What is the final answer when you multiply 23 by 4?

Back

The final answer is 92. (4 x 3 = 12, carry 1; 4 x 2 + 1 = 9, so 92).

Front

What is a 'carry' in multiplication?

Back

A 'carry' is when the result of a multiplication in the ones place is 10 or more, and you move the extra value to the next left column.

Front

What is the multiplication of 15 by 3?

Back

15 x 3 = 45.