Important Math Facts
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Important Math Facts
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25 Questions

1. The symbol ≤ is read as __________ .

2. To _________ - write the mixed numbers as improper fractions. Replace the divisor with its reciprocal and multiply.

3. Instead of writing large numbers with all the zeros - you can use _________ . For example - 4 -250 -000 -000 = 4.25 x 10⁹.

4. Both addition and multiplication are _________ . This means that order doesnft change the sum or product.

5. To ______________ - if the denominators are unlike - write equivalent fractions with a common denominator. Subtract the fractions first - and rename if necessary. Then subtract the whole numbers. Simplify if possible.

6. The _________ states that multiplying a sum by a number is the same as multiplying each addend by that number and then adding the two products. For example - 3(8 + 2) = (3 x 8) + (3 x 2).

7. An _________ is a mathematical sentence that contains < - > - ≠- ≤ - or ≥ .

8. To express a ______ as a _______ - rewrite the percent as a fraction with a denominator of 100 - and then express the fraction as a decimal.

9. To __________ an algebraic expression means to substitute a value for the variables and apply the rules for order of operation.

10. An ___________ is a combination of numbers - variables - and operations.

11. Use number lines to ________ two decimals.

12. To express a ______ as ________a - express the percent as a fraction with a denominator of 100 - then simplify.

13. The symbol < is read as ________ .

14. A ___________is for organizing a set of data that shows the number of times each item or number appears.

15. Together - the x coordinate and y coordinate form an ___________.

16. When you add or subtract _________ that have the same or like denominators - you only add or subtract the numerators. The denominator stays the same.

17. The _________ of an integer is the distance of the integer from zero.

18. The opposite of a positive integer is a ________ .

19. The _________ of a circle is twice the length of the radius.

20. The ________ of an angle is the common endpoint of the rays forming the angle.

21. An approximation of pi is 3.14 - or _______ .

22. To _____________ - express the mixed numbers as improper fractions - multiply - and simplify the results.

23. A _____________ is a system used to condense a set of data where the greatest place value of the data forms the stem and next greatest place value forms the leaves.

24. The ___________ of a circle is equal to π times its diameter or π times twice its radius. C = π d or C = 2 π r.

25. To add mixed numbers with unlike denominators - write equivalent fractions with a ___________ . Add the whole numbers and add the fractions.

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