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How do you multiply 512 x 46? Those are really big numbers!
In this lesson you will learn how to multiply multi-digit numbers by using the standard algorithm.
Let’s Review Product – The result when two numbers are multiplied. For Example: 4 x 5 = 20 product
Multiplication is repeated addition. 32 + 32 + 32 + 32 + 32 32 x 5 Multiplication is faster!
Multiplying by powers of 10. 36 x 10 = 360 36 x 100 = 3,600 36 x 1,000 = 36,000
A Common Mistake Multiplying each digit as if it represents a number of “ones.” It is important to remember the place value of each digit. 36 x 5 = 30 x 5 + 6 x 5
Let’s Review Core Lesson Multiply 512 x 46 512 x 46 First, we need to multiply 512 by 6. Then we need to multiply 512 by 40.
Let’s Review Core Lesson 512 x 46 2 1 730 0 Adding a zero shows that we are multiplying by 10’s. 8 4 20 + 23,552 Next, we add the partial products.
Let’s Review Core Lesson 405 x 57 5 3 328 0 Adding a zero shows that we are multiplying by 10’s. 5 2 20 + 23,085 Next, we add the partial products. 2
In this lesson you have learned how to multiply multi-digit numbers by using the standard algorithm.
Let’s Review Guided Practice Multiply 422 x 18.
Let’s Review Extension Activities Write a real world problem that could be solved by using 32 x 12.
Let’s Review Extension Activities Every student received 24 pencils. If there are 20 students in my class, how many pencils did we have in all?
Let’s Review Extension Activities Write a multiplication equation that has a product of 3,600.
Let’s Review Quick Quiz Multiply 290 x 73.
Let’s Review Quick Quiz Multiply 64 x 48.
How do you find the product of 78 x 34 using partial products ? What is a partial product?
Multiplication and Division
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How do you find the product of 23 x 15 using the area model?
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I think of a number. I multiply it by 5 then add 4. The result is 39. Construct an equation and find the number. I think of a number. I multiply it by.
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How do you check for extraneous solutions? -=. In this lesson you will learn to identify extraneous solutions in rational equations by checking solutions.
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© Richard A. Medeiros 2004 x y Function Machine Function Machine next.
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UNIT 2: SOLVING EQUATIONS AND INEQUALITIES SOLVE EACH OF THE FOLLOWING EQUATIONS FOR y. # x + 5 y = x 5 y = 2 x y = 2 x y.
= (x + 6) (x + 2) 1. x2 +8x x2 +16x + 48 = (x + 12) (x + 4)
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Fill in missing numbers or operations
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27 9 =.
We need a common denominator to add these fractions.
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