# 2 digit multiplication

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Curipod generated lesson: "2 digit multiplication". #5-7

1. Word cloud
120 seconds
What is 8 times 4?
2. Slide
60 seconds
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.
3. Slide
60 seconds
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.
4. Open question
300 seconds
What strategies worked best when you were multiplying two-digit numbers?
5. Open question
300 seconds
What strategies might you use to solve multiplication problems with more than two digits?
6. Open question
300 seconds
How did you feel when you solved the two digit multiplication problem?
7. Open question
300 seconds
What did you learn about two digit multiplication from today's lesson?
8. Drawings
450 seconds
Brain break: Draw a hot dog roller coaster jumping over a pile of pickles
9. Drawings
1260 seconds
Clues
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.
10. Poll
60 seconds
What is the product of 12 multiplied by 15?
• 180
• 225
• 120
• 150
11. Poll
60 seconds
What is the result of multiplying 17 by 13?
• 209
• 221
• 187
• 170
12. Poll
60 seconds
What is the product of 22 multiplied by 18?
• 418
• 432
• 396
• 352
13. Poll
60 seconds
Calculate the result of multiplying 28 by 14.
• 364
• 336
• 308
• 392
14. Poll
60 seconds
What is the product of 34 multiplied by 27?
• 1026
• 918
• 932
• 872
15. Open question
180 seconds
Work together in pairs: What is the product when you multiply 36 x 24?