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Life of Fred. Zillions of practice problems : decimals and percents / Stanley F. Schmidt.

by Schmidt, Stanley F. (Stanley Fredric), 1944-

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Polka Dot Publishing, c2019.

513.265 S354Lzdp

Mathematics -- Study and teaching.

Mathematics -- Study and teaching -- Problems, exercises, etc.

Decimal fractions.

Life of Fred. Math.

9781937032579 (hbk.)

Alternate title:

Zillions of practice problems : decimals and percents

Decimals and percents

176 pages : illustrations ; 26 cm.

Includes index.

"Reprint 2020."

"A place to practice"--Back cover.

"Take control! Your effort makes the difference in learning about decimels and percents. A hen is the only one who can lay around and still be a producer."--Page 4 of cover.

1. Number systems -- 2. Adding decimals -- 3. Subtracting decimals -- 4. Multiplying by ten -- 5. Pi -- 6. Multiplying decimals (Whole numbers) -- 7. Functions (Inverse functions ; Radius) -- 8. Subtracting mixed units -- 9. Sets (Elements of a set ; Braces ; Subsets ; Empty set ; Set-builder notation ; Union, intersection and difference) -- 10. Rules of divisibility (When numbers are evenly divisible by 5, 2, or 3) -- 11. Dividing a decimal by a whole number (When numbers are evenly divisible by 9 ; Natural numbers ; Conversion factors) -- 12. When division doesn't come out even (Divisor, quotient, and dividend ; Changing fractions into decimals ; Changing decimals into fractions) -- 13. When division never comes out even (Using remainders to terminate the division ; Using fractions to terminate the division ; Repeating decimals and terminating decimals) -- 14. Dividing by a decimal (When to add, when to subtract, when to multiply, and when to divide, the reason why 0.0112 / 16.000 is the same as 112 / 160000, squaring a number ; Billion, trillion, quadrillion, quintillion ; Exponents) -- 15. Bar graphs (Vertical bar graphs ; When to use horizontal bar graphs) -- 16. Prime numbers (Composite numbers ; Consecutive numbers) -- 17. Goldbach conjecture (His first conjecture ; His second conjecture ; Open questions in mathematics) -- 18. Area of a circle -- 19. Dollars vs. cents (.50c vs. 50c) -- 20. Pie charts (What percent means ; Circle graphs ; Changing fractions into percents ; Changing percents into fractions ; Changing decimals into percents) -- 21. 40% of 15 (Of often means multiply ; Theorems and corollaries) -- 22. 30% off (Computing a discount ; Why we do mathematics (A small essay) ; Double and triple discounts) -- 23. Distance = rate x time -- 24. 15% more (The hard way to do 15% more ; The easy way to do 15% more) -- 25. Area of a triangle (Mental arithmetic ; Heron's formula ; Square root ; Altitude of a triangle) -- 26. Area of a parallelogram (Congruent triangles) -- 27. 13 is what percent of 52 -- 28. Ratio -- 29. Ordered pairs (Mapping and images (Functions) ; A third definition of functions) -- 30. Graphing (x-coordinate and y-coordinate ; Negative numbers ; How to tell if a graph is the graph of a function ; x-axis and y-axis) -- 31. Nine conversions (When long division was invented) -- 32. Elapsed time (How long to floss your teeth) -- 33. Probability (Events with a probability of 0%)

Practice problems for the second book in the Life of Fred Upper Elementary/Middle School Series Need more practice with decimals and percents? Zillions of Practice Problems Decimals and Percents has you covered!

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