Properties
Order of Operations
Decimal Identification/
Rounding
Adding/Subtracting Decimals
Multiplying/Dividing Decimals
100
(3 + 1) + 6 = 3 + (1 + 6)
Associative
100
(15 + 2) - 7
10
100
7.333 Round the nearest tenths place
7.3
100
35.22 + 7.6 + 2.34
Actual Answer = 45.16 Estimate Answer = 50
100
3.77 x 4 =
15.08
200
7 x 3 = 3 x 7
Commutative
200
42/6 + (12 - 7)
12
200
7.485 Round to the nearest hundredths place
7.49
200
23.33 + 2.1 + 7.6 =
Actual Answer = 33.03 Estimate Answer = 30
200
5.88 x 5 =
29.4
300
9 + 0 = 9
Identity
300
27 - 10/2 + (7 * 2)
36
300
Write in words the following decimal: 46.7
Forty-six and seven tenths
300
75.22 + 2.7 + 8.1
Actual Answer = 86.02 Estimate Answer = 91
300
372.3 divided by 3
124.1
400
17 x 1 = 17
Identity
400
5 * 7 + (2 * 9) - 3
50
400
Write the following decimal in words: 78.555
Seventy-eight and five-hundred fifty-five thousandths
400
10 - 3.77
Actual Answer = 6.23 Estimate Answer = 6
400
75.54 divided by 3
25.18
500
8 x 1 = 1 x 8
Commutative
500
5 * 8 - (13 - 10) + 4
41
500
Write the following decimal in words: 7,229.3990
Seven-thousand two-hundred twenty-nine and three thousand nine-hundred ninety ten-thousandths
500
20 - 4.77 =
Actual Answer = 15.23 Estimate Answer = 15
500
68.445 divided by 5
13.689
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