2 Digit Multiplication
Learn how to multiply two digit numbers together with the help of a grid. Practice breaking down numbers into their factors to make multiplying easier. Understand the importance of the place value when multiplying numbers together.
Did you know?
In the 18th century, a Japanese mathematician named Seki Kowa invented a multiplication method known as the 'Vertical and Crosswise' method. In the 1950s, the Russian mathematician Anatoly Karatsuba discovered an algorithm for multiplication that is faster than the classic method. The fastest 2-digit multiplication algorithm is the 'Trachtenberg Speed System', which was developed by Jakow Trachtenberg in the 1940s.
What strategies worked best when you were multiplying two-digit numbers?
What strategies might you use to solve multiplication problems with more than two digits?
How did you feel when you solved the two digit multiplication problem?
What did you learn about two digit multiplication from today's lesson?
Brain break: Draw a hot dog roller coaster jumping over a pile of pickles
In pairs: Select one task
Question: What is the product of 24 and 19?
The product of two two-digit numbers involves four digits. The first two digits are the same as the first two digits of the first number. The last two digits are the same as the last two digits of the second number.
A: Work in pairs and explain your solution through a drawing. B: Calculate the product of two other two-digit numbers.
What is the product of 12 multiplied by 15?
What is the result of multiplying 17 by 13?
What is the product of 22 multiplied by 18?
Calculate the result of multiplying 28 by 14.
What is the product of 34 multiplied by 27?
Work together in pairs: What is the product when you multiply 36 x 24?