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

 Method: Look at the problems. One of the factors is written as sum of two numbers, such that one of them is a multiple of it. This is done so that it is easy to multiply with 10. Multiply the numbers and add the products. Example: 12 is written as 10 + 2. Multiply 43 and 2 which gives 86. Multiply 43 and 10 which gives 430. Add the products. Answer: 516 Directions: Expand and multiply the follwing. Write at least 10 examples of your own.
 Question 1: 37 * 81

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