Addition
MENTAL MATH
-100 + 75 =
-25
Mental Math
100-75
25
53-17+9-2
43
-12 x 9
-108
75/3
25
The line from the centre of a circle to the circumference.
Radius
MENTAL MATH
-20 + 20 =
0
MENTAL MATH
9-3
6
MENTAL MATH
15+6-2
19
MENTAL MATH
3 x -3
-9
MENTAL MATH
8/2
4
An angle that is less than 90 degrees but more than 0 degrees
Acute Angle
MENTAL MATH
-25 + (-30) =
-55
20-48
-28
(29-30)+(16-12)
3
MENTAL MATH
-15 x -5
75
MENTAL MATH
144/12
12
The fee charged when someone borrows money from a bank.
Interest
MENTAL MATH
-10 + (-10) + (- 25) =
-45
MENTAL MATH
235-15-30
190
(15+254)-(68+293)
-92
-100 x 40
-4000
650/25
26
The line between the numerator and denominator
Vinculum
MENTAL MATH
-200 + 170 - 110 =
-140
MENTAL MATH
900-780-36
84
MENTAL MATH
4 x 5 + 3 x 8 / 6
24
MENTAL MATH
-16 x -8
128
256/4
64
A triangle that has two sides and two equal angles.
Iscoleces