1. Math CRCT Review
By Mrs. Salgado
Pine Ridge Elementary

2. < is less than > is greater than = is equal to °F
degrees Fahrenheit     °C
degrees Celsius
Symbols

3. Place Value

4. altogether sum total combined entire cost plus How many in all?
Addition Key Words
altogether sum
total combined
entire cost plus
How many in all?

5. less, reduced by, remainder, least, more than, left,
Subtraction Key Words
fewest, less than,
difference, remains,
less, reduced by, remainder, least, more than, left,
How much taller?,
How many more?,
How much more?
How much saved?

6. product total How many times of in all altogether twice
Multiplication Key Words
product total How many times
of in all altogether twice
multiples area volume

7. quotient average amount of each
Division
quotient average amount of each
divided by
equal parts out of
in each

8. Rounding Rounding is used to estimate a size or amount. Example:
12 rounded to the nearest ten is 10
66 rounded to the nearest 10 is 70
If the number is less than five you go down.
If the number is five or more
you go up the line.

9. about 30 x 10 = 300 estimate So: 32 x 9 is about 300.
Estimation
Estimation is used to find
about how many or how much. To find an answer that is close to the exact amount. Example:
32 x 9=
  about 30 x 10 = 300 estimate So: 32 x 9 is about 300.

10. Addition Computation
The process of finding the total number of items when two or more groups of items are joined; the opposite operation of subtraction
Subtraction
Computation
The process of finding how many are left when a number of items are taken away from a group of items; the process of finding the difference when two groups are compared; the opposite operation of addition
Multiplication
Facts
When you combine equal groups, you can multiply to find how many in all; the opposite operation of division.
6X7= X6=42

11. An arrangement of objects in rows and columns. Example:
Arrays
An arrangement of objects in rows and columns. Example:
****
**** 3 x 4 = 12

12. Cummutative Property
The property that states that you can add two numbers in any order and get the same sum. Example: = = 13

13. Associative Property
The property that states that when the grouping of factors is changed, the product remains the same. Example: (3 x 2) x 4 = x (2 x 4) = 24

14. Problem Solving
Problem solving strategies: draw a picture, find a pattern, make a model, use a table or graph, write a number sentence, look for key words

15. Multiplication and Division
Relation Between
Multiplication and Division
4 x 7 = 28       28 ÷ 7 = 4 7 x 4 = 28       28 ÷ 4 = 7

16. The number that is to be divided
Divide 2 digit
numbers by 1
The number that is to be divided
in a division problem is the dividend.
The dividend is 35 & the divisor is 5. Example: ÷ 5 = 7      

17. A number with one or more digits to the right of the decimal point 0.5
Decimals
A number with one or more digits
to the right of the decimal point
Examples:
0.5
five tenths 5 10
0.25
twenty-five hundredths 25
100

18. Fractions
A number that names part of a whole or part of a group Examples:

19. Adding Fractions
Adding Fractions with COMMON Denominators Adding fractions with COMMON denominators is simple. Just add the top numbers (the numerators) together, and place the resulting answer in the top of a fraction using the existing denominator for the bottom number.
Example : Simple fraction addition
= 4 + =