1 / 16

Tricks to Mastering Multiplication Facts

Unlock the secrets to mastering multiplication with simple tricks for multiplying by 2, 5, 10, 11, and more! Learn how to double numbers, skip count, and utilize the analog clock for quick multiplication. Discover methods for multiplying by 9 and 12 using the distributive property, and practice with engaging examples. This guide encourages memorization of key facts to boost confidence and efficiency in calculations. Perfect for students looking to excel in math!

sheila
Download Presentation

Tricks to Mastering Multiplication Facts

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tricks to Mastering Multiplication Facts

  2. Multiply by 2 • Double a number • Skip counting by 2’s • MEMORIZE THESE!! • Examples: 2 X 4 = 2 + 2 = 4 • 5 x 2 = 5 + 5 = 10 • 2 x 8 = 8 + 8 = 16

  3. Multiply by 10 • When multiplying a number by 10, • write the number down and • annex a zero to right of the one’s place • Examples: 7 x 10 = 70 10 x 8 = 80 • 30 x 10 = 300 14 x 10 = 140

  4. Multiply by 11 • For the number you are multiplying by 11 … • the product is that number written as a • double digit • Examples: 4 x 11 = 44 11 x 3 = 33 • 11 x 7 = 77 6 x 11 = 66 • Exception: 11 x10 = 110 • 11 x 12 = 132

  5. MULTIPLY BY 5 • Remember: Any number times 5, ends in a 5 or 0 • Use the analog clock,’s minute hand. • Each number on the clock represents 5 minutes • 10 minutes past the hour, the minute hand is on the 2, so 5 x 2 = 10 • 25 minutes past the hour, the minute hand is on the 5, so 5 x 5 = 25 • 45 minutes past the hour, the minute hand is on the 9, so 5 x 9 = 45 • 60 minutes past the hour, the minute hand is on the 12, so 12 x 5 = 60

  6. Multiplying by 9 • The factor that you are multiplying by, drop by 1 • 9 x 3 = 2_ 9 x 5 = 4_ • The two digits of the product should add up to 9 • 9 x 3 = 2_; since 2+7=9, the product is 27 => 9x3=27 • 9 x 5 = 4_; since 4+5=9, the product is 45 => 9x5=45

  7. Multiply by 12 • We all know that 12 = 10 + 2 • Multiply the factor that you are multiplying by 12 • by 10 • then multiply it by 2 • then add them together • 12 x 4 => 10 x 4 = 40 • 2 x 4 = 8; 40 + 8 = 48 • 12 x 4 = 48 • This is just using the Distributive property of multiplication and addition

  8. Multiply by 4’s • Double the 2’s • If I don’t know x 4, go to x 2 and then double it • Ex: 4 x 8 = go to 2 x 8 • = (2 x 8) double it • = 16 double it • 4 x 8 = 32

  9. Multiply by 8 • Double the 4’s • If I don’t know x 8, go to x 4 and then double it (x 2) • 8 x 6 = go to 4 x 6 double it • = 24 double it • 8 x 6 = 48

  10. Multiply by 3 • MEMORIZE THEM!!!

  11. MULTIPLY BY 6 • Double the 3’s • If I don’t know x 6, go to x 3 and then double it (x 2) • 8 x 6 = go to 4 x 6 double it • = 24 double it • 8 x 6 = 48 • Examples: • 3 x 6 = (3 x3) x 2 • = 9 x 2 • = 18

  12. MULTIPLY BY 7 • MEMORIZE THEM!!!

  13. Test yourself at the following sites: • http://www.math-drills.com/multiplication/mult_v100_1212_0112_001.html • http://www.ixl.com/math/grade-3/multiplication-facts-to-12

  14. Test yourself at the following sites: • http://www.ixl.com/math/grade-3/multiplication-facts-to-12 • http://www.math-drills.com/multiplication/multiplication_facts_to_81_target09_001.pdf

  15. This presentation was created with the help of the After School Group: • Jayllia Brewer – 6th Gr • Gianna Sharp – 6th Gr • Kennedy Riley – 4th Gr • Hallie Williams – 6th Gr • Avery Ross – 6th Gr • Davion Rhone – 6th Gr • Tikayla Wade – 6th Gr

More Related