Rules for Operating Rational Numbers
A positive plus a ___________ equals a positive number.
What is a positive number?
3.15 + 2.25
What is 5.40?
-70 - 95 = o
What is o = -165?
5(1/3) = g
What is g = 1 2/3 ?
-96 ÷ -6 = y
What is y = 16?
When you have a positive plus a negative, you __________ and ______ the sign of the __________ number.
What is when you have a positive plus a negative, you subtract and keep the sign of the greater number.
-61 + (-43.6) = s
What is s = -104.6?
-0.14 - (-0.86) = t
What is t = 0.72?
-3.2 ⋅ 5 = q
What is q = -16?
When you have a negative times a positive number the product is ____________.
What is when you have a negative times a positive number the product is negative?
-10/24 - (-2/24) = w
What is w = -1/3?
-9/10 ⋅ (-5/6) = z
What is z = 3/4?
To subtract two rational numbers you can use the strategy __________, ___________, ___________ and then you ______ the two values.
What is to subtract two rational numbers you can use the strategy keep, change, change and then you add the two values.
-28 1/3 + (-2 1/2) = r
What is r = -30 5/6?
-14 2/5 - (-19 3/10) = u
What is u = 4 9/10?
-3 1/2 ÷ (-1 1/8) = v
Make sure you simplify!
What is v = 3 1/9?
To divide two rational numbers you can use the strategy __________, ___________, ___________ and then you ______ the two values. When the second value flips the sign remains the _______!
To divide two rational numbers you can use the strategy keep, change, flip and then you multiply the two values. When the second value flips the sign remains the same!
To make a small amount of play dough, you can mix 1 cup of flour, 1/2 cup of salt and 1/2 cup of water. What is the total amount of ingredients added to make the play dough?
What is 2 cups?
A rectangular garden has a length of 7 3/4 ft and a width of 2 1/3 feet. How much fencing is needed to surround the garden?
What is 20 1/6ft?
Mason made 3/4 of a pound of trail mix. If he puts 3/8 of a pound into each bag, how many bags can Mason fill?
What is Mason can fill the trail mix in 2 bags.