POWs
Caylie read 56 pages in her new book. If she began reading at the top of page 32, on what page did she finish?
56 + 31 = 87
She read 87 pages
An easier way to calculate by putting numbers in groups of 10
Regrouping
The sum of all the interior angles in an polygon with n sides
180(n - 2)
The number of flies in a room is doubling every hour. If there are 1024 flies in the room at noon, at what time were there 512 flies in the room?
11
Alicia is preparing her birthday party. She starts 3 days before 5 days after 2 days after 6 days before 1 day after 3 days before June 15th. Which day did she start?
15 - 3 + 1 - 6 + 2 + 5 - 3 = 11
She starts on June 11th.
Alistair disassembled all the wheels of his cars and motorbikes collection. If he has 15 models in total and 38 tires, how many cars does he have?
15 x 2 = 30 --> used wheels when giving 2
38 - 30 = 8
8/2 = 4 --> 4 cars and 11 motorbikes
It is the answer to an addition question
Sum
A triangle with all equal sides and all equal angles
Equilateral
The hundreds digit of the largest number that uses each of the odd digits exactly once.
5
Alex scored 21, 24 and 27 is his first 3 drills. How much should he get in his 4th drill to get to an average of 27?
21 + 24 + 27 = 72
27x 4 = 108
108 - 72 = 36
He should get 36 in his 4th drill
There are 28 apples on a tree. All but 18 apples were picked by Joshua during his apple picking. How many apples were left on the tree?
All apples were picked except 18.
18 apples were left on the tree.
They are whole numbers that go above and below zero
Integers
All the exterior angles of a polygon
360
What is the probability of getting a sum of less than 7 on one throw of two fair dice?
1: 1,2,3,4,5
2: 1,2,3,4
3: 1,2,3
4: 1,2
5: 1
15/36 = 5/12
Ryan planted some "Magic Carrot" seeds in the garden. He planted 23 seeds, each seed one meter apart from the other, in a long row. How long is Ryan's garden?
between 23seeds there will be 22 spaces.
22 x 1 = 22m
The garden is 22m long
(14 x 13)/2 = 91
It is a number with exactly 2 factors
Prime
All the rectangles are squares
NO
12/(5 - 2) =
4
Order the fractions from the least to the greatest
1/2, 7/8, 3/4, 5/6, 9/10
They are all missing one piece
1/2, 3/4, 5/6, 7/8, 9/10
The chickens in Ms. Di Matteo's garden were busy. If 55 chickens were cackling and 43 chickens were laying egg and 18 chickens were doing both, how many chickens were there?
55 + 43 - 18 = 80
80 chickens
It is a number with 3 or more factors
Composite
All the rectangles are parallelograms
YES
It is the same as 3/12 and 25/100
1/4
Did you enjoy this class?
YEEEEEES!!!