1. CRCT Key Terms Math

2. Angles  An angle is formed by two rays or two line segments that meet at a point. This point is called a vertex. (The plural of vertex is vertices.  There are four different kinds of angles. right angle straight angleacute angleobtuse angle

3. Benchmark Numbers Numbers that help you estimate the number of objects without counting them, such as 25, 50. 100, and 1,000

4. Area The number of square units needed to cover a figure. To find the area of a figure, count the squares inside it. You add squares or multiply the number of squares across and the number going down to find area. 3 x 2 = 6 There are 8 sq units

5. Best Unit  What would be the best unit you can used to measure or weigh something with? rulerinchescentimeters scalemillimetersmeters milesyardfoot/feet pounds ounces

6. Difference The answer in a subtraction problem Example: 15 – 5 = 10 Difference

7. Digits Any of these numerals: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

8. Clockwise In the directions in which the hands of a clock move Hands move to the right

9. Data Information collected then reviewed

10. Equal To When both numbers are the same. 99 is equal to 99 or 99 = 99

11. Equivalent Another word for equal to they mean the same thing. 38 is equivalent to 38 or 38 = 38

12. Estimate A number that is close to the exact answer 191 + 302 =439 exact answer 200 + 300 = 500 estimate answer

13. Even Number 2, 4, 6, 8, 10, 12, 14, 16, 18, 20…

14. Odd Numbers 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27

15. Factor A number being multiplied by another in a multiplication problem Example: 3 x 4 = 12 factor factor

16. Fraction A number that names a part of a whole or a part of a set The top number is the numerator and the bottom number is the denominator. ¾ ½

17. Greater Than When a number is larger than another number. 58 is greater than 32 or 58 > 32

18. Less Than When a number is smaller than another number. 92 is less than 122 or 92 < 122

19. Lines of Symmetry A C O M

20. Measurement The act of measuring or the process of being measured Example: Length, Width, and Height

21. Width How wide an object is something Width can be measured in: inches, yard, miles, millimeters, centimeters, meters, feet, and kilometers

22. Height How tall an object is. Height can be measured in : inches and centimeters

23. Length How long and object is. Length can be measured in: meters, millimeters, centimeters, miles, feet, and yards.

24. Model Is a picture of something or to show how to do something.

25. Money 1 penny = 1 cent or $0.01 1 nickel = 5 cents or $0.05 1 dime = 10 cents or $0.10 1 quarter = 25 cents or $0.25 1 half dollar = 50 cents or $0.50 1 dollar ($) = 100 cents or $1.00

26. Number is Closest Number is Nearest To The number that is identified is closest to a given numeral on a number line. Ex. What number is 134 closest to? 125150175 Answer is 150.

27. Number Line 012345678

28. Number Pattern 24681012 102030405060 100755025 200 400600 8001,000 121723283237

29. Number Sentence 34 + 23 = 57 136 – 47 = 89

30. Number Sentence is Same As or Which expression is the same 4 x 77 = (4 x 7) + (4 x 70) =

31. Older Sam is older than I am. Sam is 12 and I am 11. Older is a greater number. It is a bigger number.

32. radius A line segment with one endpoint at the center of a circle and the other endpoint on the circle.

33. Millimeter (mm) A metric unit for measuring length or distance; 10 millimeters = 1 centimeter 1,000 millimeters = 1 meter

34. Multiplication Repeated addition 3 + 3 + 3 + 3 = 12 3 x 4 = 12

35. Division To separate into equal parts. 12 divided by 3 equals?

36. Ordinal Number First, second, third, forth, fifth, sixth, seventh 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th 9 th 10 th

37. Tally Chart

38. Same As

39. Solve

40. Value Equals

41. View As

42. Whole Number

43. Younger