MATH FORMULA
BASE X HEIGHT DIVIDED BY 2
AREA OF A TRIANGLE
DAILY DOUBLE
$39 is 78% of what amount?
50
If one yard of material costs $2.00, how much do 5½ yards cost?
5.5 x 2.oo
$11
change
7/10
to a decimal
.70
convert to improper fraction
2 3/4
11/4
2(L) + 2(W)
perimeter of a rectangle
$156 is 39% of what amount?
400
Robert makes $12.00 an hour when he works overtime. How much does he make for 3¼ hours of overtime work?
3.25 x 12
$39
change
2/7
to a decimal
.285
convert to improper fraction
8 3/5
43/5
R X T
DISTANCE
DAILY dOUBLE
$494 is 95% of what amount?
520
Wilma gets $8.00 an hour where she works.For overtime she gets “time and a half” (1½ times her regular wage).How much does she get for one hour of overtime work?
8+4=12
change
4/5
to a decimal
.80
convert to improper fraction
8 6/7
62/7
(P) x (R) x (T)
interest
$268 is 67% of what amount?
400
How many pieces of wood each 7½ inches long can be cut from a board that is 45 inches long?
45 divided by 7.5
6
change
41/74
to a decimal
.55
convert to improper fraction
11 7/13
150/13
(L) x (W)
area of a a rectangle or square
$365 is 73% of what amount?
500
DAILY DOUBLE
Julie needs 2¼ yards of material to make a dress for her daughter. How many dresses can she make from 10½ yards of material?
10.50 divided by 2.25
4.66
so four complete dresses
change
99/100
to a decimal
.99
convert to improper fraction
4 3/4
19/4