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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 4 - Mathematics
3.23 Multiplication - Double Digits (WIZ Math)

Method:
  1. Look at the problems.
  2. One of the factors is written as sum of two numbers, such that one of them is a multiple of it.
  3. This is done so that it is easy to multiply with 10.
  4. Multiply the numbers and add the products.
Example:
  1. 12 is written as 10 + 2.
  2. Multiply 43 and 2 which gives 86.
  3. Multiply 43 and 10 which gives 430.
  4. Add the products.
Answer: 516


Directions: Expand and multiply the follwing. Write at least 10 examples of your own.
Question 1: 87
* 89
Answer:

Question 2: 54
* 89
Answer:

Question 3: 70
* 81
Answer:

Question 4: 72
* 37
Answer:

Question 5: 35
* 0
Answer:

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Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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