Thursday, September 22, 2016

Math Flash Cards: Multiply by 12

These math flash cards feature multiplying by 12. If you have been learning multiplication tables in order from one through twelve, the good news is that you have already learned all of these except 12 X 12!

Tips for Multiplying by
  • When learning to multiply by 12, it may be helpful to look at the other number and multiply that number by 10 and by 2 and add those two answers together. For example, when multiplying 7 by 12, multiply 7 by 10 to get 70 and then multiply 7 by 2 to get 14. Add 70 and 14 to get an answer of 84. Here is another example: to multiply 9 by 12, multiply 9 by 10 to get 90 and then multiply 9 by 2 to get 18. Add 90 and 18 with a result of 108.
  • Another way to multiply by 12 is to add the other number to itself twelve times. For example, when multiplying two by twelve, imagine having two 12s or 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 +2 = 24. Here's another example: when multiplying 8 by 12, imagine having 12 8s or 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 = 96. It is easy to lose count and takes a good bit of time to multiply by 12 using this method.
  • You may skip count by 12 when multiplying by twelve. Simply skip count by 12s the number of times that is equal to the number you are multiplying by twelve. For example, when multiplying 5 by 12, count by 12s five times...12 - 24 - 36 - 48 - 60 to get an answer of 60. When multiplying 4 by 12, count by 12s four times...12 - 24 - 36 - 48 for an answer of 48.
Directions
1.     Click on the first slide to enlarge to full screen.
2.     Click on the slide or thumbnail at the bottom to advance to the next slide.

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Math Flash Cards: Multiply by 12

Free Math Flash Cards by Katrena

0 X 12

0 X 12 = 0

1 X 12

1 X 12 = 12

2 X 12

2 X 12 = 24

3 X 12

3 X 12 = 36

4 X 12

4 X 12 = 48

5 X 12

5 X 12 = 60

6 X 12

6 X 12 = 72

7 X 12

7 X 12 = 84

8 X 12

8 X 12 = 96

9 X 12

9 X 12 = 108

10 X 12

10 X 12 = 120

11 X 12

11 X 12 = 132

12 X 12

12 X 12 = 144

Free Math Practice Flash Cards at Student Survive 2 Thrive

Math Flash Cards: Multiply by 11

These math flash cards feature multiplying by eleven. Many people find this multiplication set to be fairly easy to learn - I hope my hints help you to master this set!

Tips for Multiplying by 11
  • I think the easiest way to learn to multiply the numbers one through nine by 11 is to simply write the number you are multiplying by 11 twice. For example, to multiply 4 by 11, write 44. If you are multiplying 8 by 11, write 88.
  • For multiplying 10, 11, and 12 by eleven, an interesting pattern emerges that may be helpful. Look at the number that you are multiplying by 11. Write down the first and last digit of that number, leaving a space between the two digits. The middle digit is the sum of the two digits that you wrote. For example, when multiplying 10 by 11, write 1 and 0 and leave a space between them. Next, add 1 and 0 and write that number as the middle digit, giving an answer of 110. Here is another example: when looking at 11 X 12, write 1 and 2 and leave a space tween them. Next, add 1 and 2 and write that number at the middle digit, giving an answer of 132.
  • Another way to multiply by 11 is to add the other number to itself 11 times. It is easy to lose count using this method. For example, when multiplying 5 by 11, imagine having eleven 5s or 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 = 55. Here's another example: when multiplying 9 by 11, imagine having eleven 9s or 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 99.
  • It may be easier to skip count by eleven when multiplying by 11. Simply skip count by 11s the number of times that is equal to the number you are multiplying by eleven. For example, when multiplying three by eleven, count by 11s three times...11 - 22 - 33 to get an answer of 33. Here is another example: when multiplying seven by eleven, count by 11s seven times...11 - 22 - 33 - 44 - 55 - 66 - 77 for an answer of 77.
Directions
1.     Click on the first slide to enlarge to full screen.
2.     Click on the slide or thumbnail at the bottom to advance to the next slide.

Related Articles

Thank you for visiting my Student Survive 2 Thrive blog. My resources are designed to help people to learn various concepts - feel free to check out my site maps to see my large variety of sources.

Math Flash Cards: Multiply by 11

Free Math Flash Cards by Katrena

0 X 11

0 X 11 = 0

1 X 11

1 X 11 = 11

2 X 11

2 X 11 = 22

3 X 11

3 X 11 = 33

4 X 11

4 X 11 = 44

5 X 11

5 X 11 = 55

6 X 11

6 X 11 = 66

7 X 11

7 X 11 = 77

8 X 11

8 X 11 = 88

9 X 11

9 X 11 = 99

10 X 11

10 X 11 = 110

11 X 11

11 X 11 = 121

12 X 11

12 X 11 = 132

Free Math Practice Flash Cards at Student Survive 2 Thrive