Vocab
What symbol is used for rational numbers?
A Q with a line through it
divide the fraction out using long division. If there's a whole number, it stays the whole number.
When adding or subtracting fractions, what must you find first (2 words)
What are the sign rule tools you have to keep in mind when mult/div rational numbers?
tic tac toe board
What are the sign rule tools you have to keep in mind when mult/div rational numbers?
tic tac toe board
A decimal that ends
Terminating decimal
Explain the process of converting a decimal to a fraction.
Using place values, see how far the decimal goes out. Make the denominator that place value. If there's a whole number, it stays a whole number.
What must you remember when adding/subtracting decimals?
Line up the decimals
How do you multiply fractions?
1) convert to improper
2) multiply straight across (look for the shortcut in cross reducing)
What do you have to keep in mind when dividing decimals?
The outside number, the divisor, must be a whole number. What you do to the outside, you must do to the inside.
A decimal that repeats a specific pattern; never ends.
Repeating decimal
Convert to a decimal: -5 1/8
-5.125
What are the sign rule tools you have to keep in mind when adding/subtracting rational numbers?
The song and LCO
How do you multiply decimals- What do you have to keep in mind with the decimal?
Count how many decimal places are in the factors, then put that decimal back in the product the same number of places.
What you divide by a fraction, what are you actually doing?
Multiplying by the reciprocal.
What is a reciprocal?
When you flip a fraction. The numerator becomes the denominator and the denominator becomes the numerator.
Convert to a decimal: 4/9
.444... (.4 with a repeating bar over the 4)
(-1 1/4) - 5/6
-25/12 or -2 1/12
(-7/8)(2/21)
-1/12
9/10 ÷ (-27/20)
-2/3
How do you denote a repeating decimal?
bar notation. Put a bar over the number(s) that repeat.
Convert to a fraction (reduce if needed): 2.55
2 11/20
45.1 + (-8.11)
36.99
(3.1)(.21)
.651
(-4)÷(-.25)
16