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Adding and Subtracting Fractions and Decimals Flashcards | StudBud
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Adding and Subtracting Fractions and Decimals
Adding and Subtracting Fractions and Decimals
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Includes positive and negative fractions and decimals. 7th Grade Math
Flashcards
12 cards
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Practice quiz
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Questions
12
Answers
1
In the fraction 3/4, 3 is the denominator and 4 is the numerator.
False
True
2
When adding a positive number and a negative number together like 8.1 + (-10.1), you would
find the difference(subtract) keep the largest number's sign
add the two numbers and keep the sign
3
1/7 + 3/7 - 3/7 = 1/7
True
False
4
3.6 + (-18.8) =
-22.4
15.2
22.4
-15.2
5
Consider the equation 8.1 + (-10.1) = -2. Choose the equation that matches.
I have 8.1 and I have 10.1 so I owe 18.2
I have 8.1 and I owe -10.1 so I owe -2.
6
Reduce the improper fraction 9/7.
.77
1 2/7
7
The first step to solving the subtraction problem -7 - 5.2 is to
change to an addition problem: -7 + (-5.2) = -12.2
switch the numbers around to -5.2 - 7 = 2.2
8
-4/5 - (-3/5) =
-7/5 or -1 2/5
-1/5
none of these
-12/10 or -1 1/5
9
5/9 - 2/3 + 2/9 =
5/9 + (-6/9) + 2/9 = 1/9
5/9 - 2/3 + 2/9 = 5/15 = 3/5
10
-8.25 - -2.5 =
-8.35 + (-2.5) = -10.55
-8.25 + 2.5 = -5.75
11
-5 + (-2.78) =
2.22
7.78
-2.22
-7.78
12
Denominators (the bottom number) must be the same in order to add fractions.
True
False
