5NBT5 Multiply 3 digit by 2 digit Whole Numbers

Front

What is the process to multiply a 3-digit number by a 2-digit number?

Back

To multiply a 3-digit number by a 2-digit number, you can use the standard algorithm: 1. Multiply the 3-digit number by the ones digit of the 2-digit number. 2. Multiply the 3-digit number by the tens digit of the 2-digit number, shifting one place to the left. 3. Add the two products together.

Front

Calculate: 284 boxes of books with 20 books in each box. How many books are there in total?

Back

5680 books (284 x 20 = 5680).

Front

If Mia spends 45 minutes on the treadmill each day, how do you find out how many minutes she spends in a year?

Back

Multiply 45 minutes by 365 days: 45 x 365 = 16,425 minutes.

Front

What is the total cost for 13 nights at a hotel costing $249 per night?

Back

$3,237 (13 x 249 = 3,237).

Front

How do you find the total number of students in 45 classrooms with 27 students each?

Back

Multiply 45 by 27: 45 x 27 = 1,215 students.

Front

What is the importance of estimating before multiplying large numbers?

Back

Estimating helps to check if the final answer is reasonable and can guide you in identifying errors.

Front

What is a 3-digit number?

Back

A 3-digit number is a number that has three digits, ranging from 100 to 999.

Front

What is a 2-digit number?

Back

A 2-digit number is a number that has two digits, ranging from 10 to 99.

Front

Explain the term 'product' in multiplication.

Back

The product is the result of multiplying two or more numbers together.

Front

What is the standard algorithm for multiplication?

Back

The standard algorithm involves multiplying each digit of the bottom number by each digit of the top number, aligning the results according to place value, and then adding them together.