Order of Operations
Solve: 5 ÷ 1 + 10
5 + 10 = 15
Write an algebraic expression for:
There were n students in the dining room and then 6 more students entered.
n + 6
There is no equal sign, because we do know what n stands for, nor do we know the total number of students in the dining hall, so we cannot solve for n.
Round to the hundredths place: 6.435
6.44
Express in scientific notation,
4,300
4.3 x 103
How many feet in 15.5 yards?
15.5 x 3 = 46.5 feet
Solve: 30 - 2 x 3
30 - 6 = 24
Solve for p=5
10 + p - 3 = 88
p = 88 - 10 + 3
p = 78 + 3 = 81
p = 81
Round the tenths place: 186.09
186.1
Write in standard form,
6.099 x 105
609,900
How many centimeters are there in 3 meters?
300 cm
Solve: 1,000 - 100 - 52
1,000 - 100 - 25 =
900 - 25 = 875
Write an equation for:
Sam has n dollars and John has 3 dollars more than Sam. Together they have 39 dollars.
n + (n + 3) = 39
Round to the ten thousand's place: 44,108,634
44, 110,000
1Express in scientific notation,
23,890,000,000
2.389 x 1010
What is the perimeter and area of a square whose one side measures 6 inches?
perimeter= 6 + 6 + 6 + 6 = 24 inches
area= 6 x 6 = 36 in2 or 36 inches square
2 + 13 x 4 + (3 + 7) -10
2 + 1 x 4 + 10 - 10 =
2 + 4 + 10 - 10 = 6
Add 5 1/9 - 4 1/6 =
17/18
Round to the nearest tenth:
7.98
0.98 will round up to 1.0, so
7.98 will become 8
Write in standard form,
1.34 x 101
13.4
144 in = __________ yards
1 foot = 12 inches
3 feet = 1 yard
144/12 = 12 (how many feet)
12/3 = 4 yards
203 ÷ 4 - 15 + 42
8,000 ÷ 4 - 15 + 16 =
2,000 - 15 + 16 =
1,985 + 16 = 2,001
Write an equation and solve:
Karen ran 4 miles on Thursday, took a break on Friday, ran 5 miles on Saturday, and then twice as many miles on Sunday as she did on Thursday. How many miles did Karen run in all?
4 + 5 + 2 x 4 = x
9 + 8 = x x = 17 miles
or
4 + 5 + (4 + 4) = x
9 + 8 = x x = 17 miles
Round to the nearest tenths and solve
4.56 + 5.01
4.6 + 5.0 = 9.6
Write in standard form and add,
4.56 x 102
5.15 x 100
456 + 5.15 x 1
456 + 5.15 = 461.15
The brush fire began at 2:15 am in the morning. By 1:02 pm the amazing firefighters had put out the fire. What was the elapsed time between the beginning of the fire and its end?
10 hours 47 min