Exponents
Rounding
Adding & Subtracting Decimals
Multiplying & Dividing Decimals
Multiplying Whole numbers
100

Write 1000 as an exponent

10 3

100
Round 8.487 to the nearest hundredth
8.49
100
0.3 + 0.82
1.12
100
4 thousandths times 3
0.004 times 3 = 0.012
100
Triple the sum of 33 and 27
180
200

100 times 100

10 4

200
Round .985 to the nearest one
1
200
91.49 - 0.7
90.79
200
4.236 ÷ 3 =
1.412
200
The difference between 4 twenty-fives and 3 twenty-fives
(4 times 25) - (3 times 25) = 100-75 = 25
300

39 times 10 4

390,000

300
Round 8.356 to the nearest one and to the nearest thousandth.
nearest one = 8 nearest thousandth 8.356
300
22.78 + 0.2 + 321.002 =
343.982
300
4 times as much as 20.075
80.3
300
343 times 21 =
7203
400
4 7200 divided by 10
.7200
400
Jules reads that one pint is equivalent to 0.473 liters. He asks his teacher how many liters there are in a pint. His teacher responds that there are about 0.47 liters in a pint. He asks his parents, and they say there are about 0.5 liters in a pint. Jules says they are both correct. How can that be true?
the teacher rounded to the nearest hundredth (.47) parents rounded to the nearest tenth (.5)
400
27 hundredths + 5 hundredths =_____hundredths =_____tenths _____hundredths = ______
27 hundredths + 5 hundredths = 32 hundredths = 3 tenths 2 hundredths = .32
400
16.404 ÷ 6 = _____
2.734
400
434 times 32
868
500

After a lesson on exponents, Tia went home and said to her mom, “I learned that 10 4 is the same as 40,000.” Is she correct? Why or Why not?

4 She is not correct. 10 is the same as 10,000

500
A decimal number has two digits to the right of its decimal point. If we round it to the nearest tenth, the result is (13.7). What is the maximum possible value of this number?
13.74
500
A pen costs $2.09. It costs $0.45 less than a marker. Ken paid for one pen and one marker with a five dollar bill. What is Ken's change?
$2.46
500
Esperanza usually buys avocados for $0.94 apiece. During a sale, she gets 5 avocados for $4.10. How much money did she save per avocado?
She saved $0.12 per avocado
500
A box contains 24 oranges. Mr. Lee ordered 8 boxes for his store and 12 boxes for his restaurant. Write an expression to show how to find the total number of oranges ordered. Solve.
(24 times 8) + (24 times 12) = 480
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