Vocabulary
What does "sum" mean?
Answer to an addition problem
MENTAL MATH
37+70
107
30-15
15
MENTAL MATH
2 x 12 =
24
MENTAL MATH
24 / 4 =
6
What does the word "of" mean when used in math?
To multiply or multiplication
345,134 + 56,134 =
401,268
Ashley wants to buy a new book worth $23, but she only has a $50 bill How much change will she receive?
$27
MENTAL MATH
50 x 2 =
100
Mental Math
45 divided into 5 groups
9
What does the word "difference" refer to in math?
Subtraction
MENTAL MATH
98 + 499 =
597
MENTAL MATH
60-31
29
576 x 5 = ?
2880
MENTAL MATH
84 divided into 7 groups
12
If a word problem asks you "how much more/less" you should use this operation
Subtraction
MENTAL MATH
30 + x = 951
x = 921
54,642-318
54,324
MENTAL MATH
12 x 12 =
144
MENTAL MATH
100 divided into 4 groups
25
What do you call the numbers 4 and 7 in the problem 4 x 7 = 28
Factors
MENTAL MATH
345 + 650
995
562-191
371
345 x 18 =
6210
MENTAL MATH
132 / 12
11