2-1: Multiplication Patterns When Multiplying products of 10: Multiply the non-zero digits Write one zero to the right of the product for each zero in the factor or factors. When Multiplying a decimal by 10, 100, or 1,000: Multiply the non-zero digits. Count the number of zeros in the multiplier. Move the decimal point in the Multicand to the right one place for each zero. Write as many zeros in the product as needed to place the decimal point correctly..004 Multiplicand X 100 Multiplier Product

2-2: Estimate Products

2-3: Multiply Whole Numbers

2-4: Multiply Decimals Multiply as you would with Whole Numbers. Count the number of Decimal Places in both Factors. Mark off the same number of decimal places in the product. Factor- Number being Multiplied Product- Answer from Multiplication Decimal Song

2-5: Exponents Exponent- Used to express a number that is a product of factors that are the same Any Exponent tells how many times to use the base as a factor. Cubed= “to the third power Squared= “to the second power” Example: 2 5 = 2 x 2 x 2 x 2 x 2 = Base 5- Exponent 2 5 = Exponential Form 32= Standard Form

2-6: Scientific Notation Scientific Notation- Expresses a product of two factors. One factor is a number greater than 1 but less than 10. The other factor is a power of 10. How to: When given a whole number, move the decimal point to the left how ever many spaces necessary to make the number between How ever many spaces we moved becomes the power of 10. Drop the zeros of the first number to make it the first factor.

2-7: Problem Solving Strategy Read- Visualize yourself in the problem as you read it. Plan- Use the information to write an equation. Solve Check Ex. : Bernice has a collection of 90 stamps from Europe and Africa. Sixty stamps are from Europe. How many stamps does she have from Africa? 90= E + A 90= 60 + A Solve for A A=30