## Test your basic knowledge |

# Number Sense Vocab

**Instructions:**

- Answer 50 questions in 15 minutes.
- If you are not ready to take this test, you can study here.
- Match each statement with the correct term.
- Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

**1. 1/5 + 1/4=4/20 +5/20 and 20 is the...**

**2. The smallest number that is a multiple of both numbers. (the LCM of 15 and 6 is 30)**

**3. The expression of a number as a product of prime factors; use a factor tree!**

**4. To perform a calculation - E.g. 2+2=4**

**5. Percent x whole**

**6. A number with more than two factors**

**7. Comparing decimal fractions**

**8. Number divisible by 6**

**9. A number that results from multiplying a factor by itself**

**10. In multiplication or addition - the order of two numbers may be switched around and the answer is the same. Ex: a+b = b+a. or (1x2) x 3=1x (2x3)**

**11. To find the answer for; solve**

**12. To find a number that is close to an exact answer - E.g. 23+24 is around 50**

**13. Relationship in which a number is smaller than another**

**14. The largest number in a group of numbers**

**15. Rational numbers that expressed in decimal format that have fixed number of digits. 1.5 etc.**

**16. Dividing fractions**

**17. Multiplying fractions**

**18. When a number is larger than the other number. Example 65 > 56**

**19. Median**

**20. Comparing positive fractions**

**21. Adding/subtracting fractions**

**22. Any whole number that ends with 0 - 2 - 4 - 6 - or 8 - any whole number that can be divided by 2**

**23. Cannot be expressed in the form a/b. Include square roots of whole numbers that are not perfect squares and non terminating decimals that do not repeat. pi**

**24. Properties of 1 and -1**

**25. A letter that represents a value that may change**

**26. Add up the digits; if the sum is a multiple of 3 the number is divisible by 3**

**27. Number divisible by 4**

**28. Not identical or equivalent to**

**29. Percent increase**

**30. Two expressions that are set equal to each other; a number sentence with an equal sign**

**31. A set of operators - numbers - variables and grouping symbols; no equal sign**

**32. Percent decrease**

**33. Simplifying complex fractions: two methods**

**34. Dividing decimals**

**35. The bottom number in a fraction; tells how many parts a whole is divided into OR how many parts in a group - E.g. 2/4 and what position is the 4?**

**36. Two factors together that are multiplied to equal a larger number.**

**37. To change a percent to a decimal**

**38. 8x8=64 What is 64?**

**39. Able to be divided evenly (without a remainder)**

**40. Be identical or equivalent to**

**41. How much a number is worth**

**42. A number with only two factors - one and itself - E.g. 3 -7 -11 -13 -17 -19...**

**43. Mode**

**44. Reciprocal of number**

**45. The value of a digit based on its position within a number - e.g. 2 -432 The position of the numbers**

**46. An equation showing 2 ratios are equal**

**47. Choosing numbers close to the numbers in a problem - and then adjusting the answer to compensate for the numbers chosen - E.g. 23 + 18 and 23+20=43 Since 2 was added to 18 to make 20 - we need to take 2 away from 43.**

**48. The answer to a subtraction problem**

**49. Rational numbers in decimal form that have a block of on or more digits that repeat continuously**

**50. Numbers that are easy to compute mentally - E.g. 34 / 5 is close to 35 / 5**