Say What?
3 + 3 x 3 = ?
12
15-7
8
MENTAL MATH
37 + 68 = ?
105
MENTAL MATH
2 x 12
24
22 divided by 2
11
What is the value of the 1 in 150?
100
6 divided by 3
2
Mr. Lara wants to buy a phone charger worth $42.50, but he only has a $50 bill. How much change will he receive?
$7.50
134 + 134 = ?
268
3 x 3 x 4 = ?
36
42 divided into 6 groups
7
What is the value of the 3 in 638?
30
2x12
24
Mental Math
82 - 49 =
33
99+75
174
12 x 5 = ?
60
144 divided by 12
12
What form is this? 1,000+500+10+6
Expanded Form
320+30
350
Alice had 20 apples and she gave 8 apples to her teacher. How many apples does she have left?
12 apples
MENTAL MATH
98 + 499 = ?
597
12x7
84
MENTAL MATH
45 divided into 9 groups
5
What is this form? Ex: one hundred fifty
Word Form
3x3
9
213-185 = ?
28
MENTAL MATH
155 + 245 = ?
400
5 x 5 = ?
25
MENTAL MATH
40 divided into 5 groups
8
What number is this? Two hundred twenty three thousand, four hundred ninety two
223,492
4+3 x 2 = ?
10
Mental Math
100 - 44 = ?
56
MENTAL MATH
437+514 = ?
951
MENTAL MATH
50 x 2 + 30
130
MENTAL MATH
100 divided into 5 groups
20
Write 10,548 using word form.
Ten thousand five hundred forty eight