3 digit by 2 digit multiplication

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times (3 + 3 + 3 + 3).

Front

What does it mean to multiply a 3-digit number by a 2-digit number?

Back

It means to take a number that has three digits (like 723) and multiply it by a number that has two digits (like 72). This involves calculating the total of the 3-digit number added together as many times as the value of the 2-digit number.

Front

How do you calculate 723 x 72?

Back

To calculate 723 x 72, you can break it down into smaller parts: (723 x 70) + (723 x 2) = 50,610 + 1,446 = 52,056.

Front

What is the product of 619 and 80?

Back

The product of 619 and 80 is 49,520.

Front

What is the formula to find the total cost of multiple items?

Back

Total Cost = (Number of items) x (Cost per item).

Front

If Katie bought 32 boxes of key chains at $15 each, how much did she spend on key chains?

Back

Katie spent 32 x 15 = $480 on key chains.

Front

If Katie bought 35 boxes of glow-sticks at $10 each, how much did she spend on glow-sticks?

Back

Katie spent 35 x 10 = $350 on glow-sticks.

Front

What is the total amount Katie spent on key chains and glow-sticks?

Back

Katie spent a total of $480 + $350 = $830.

Front

What is the multiplication of 369 and 24?

Back

The product of 369 and 24 is 8,856.

Front

What is the importance of estimating products in multiplication?

Back

Estimating products helps to quickly check if the final answer is reasonable and to simplify calculations.