Conversions to Memorize
¼
What is 0.25
-3/10
What is -0.3
(-7/12) + (-3/12)
Write in simplest form.
What is -5/6
0.75 + 0.45
What is 1.2
The sign of the sum of two negative numbers
What is negative?
⅓
What is 0.333...
(repeating)
-4/5
What is -0.8
3 2/9 + (-1 7/9)
Write in simplest form.
229.50 + 149.99
What is 379.49
DOUBLE JEOPARDY! How can you figure out what sign the sum should be when adding a positive and a negative number?
The sum will have the same sign as the number with the LARGER absolute value.
⅒
What is 0.1
5/9
What is 0.555...
OR
0.5 repeating
-13 1/4 + 4 3/4
Write in simplest form.
What is -8 1/2
-0.4 + 0.9
What is 0.5
The phrase we use to remember how to change a subtraction problem to addition.
What is Keep, Change, Opposite or "add the opposite"
⅕
What is 0.2
3/8
What is 0.375
DOUBLE JEOPARDY!
-2 1/2 + -1/3
Write in simplest form.
What is -2 5/6
-2.25 + (-7.87)
What is -10.12
This has to be done first before adding fractions.
What is making the denominators the same?
⅙
What is 0.1666...
(repeating)
-7/22
What is -0.31818...
("18" digits repeat)
1 1/4 + (-1/3) + (-7/8)
Write in simplest form.
What is 1/24
-21.17 + 16.84
What is -4.33
This has to be done first when adding decimals.
What is lining up the decimal point?