Pottpourri
Multiplication
Division
Fractions I
Fractions II
100
List the first 5 multiples of 10
10, 20, 30, 40, 50
100
5x12
60 5x12=(5x10)+(5x2) = 50+10 = 60
100
20÷5
4
100
1=__ 2
2; 3; 4 Any equivalent fraction that is equal to half 4 6 8
100
2+5=____ 3 3
2+5= 7 or 2 1/3 3 3 3
200
30x30
900 30x30=(3x3)x(10X10) =9x100 = 900
200
3, 6, 9, 12,... What is the 10th multiple of 3?
30
200
45÷5
9
200
Represent one and three-fifths on an area model
(See whiteboard)
300
List the factors of 28 in order
1x28 2x14 4x7 Factors of 28: 1, 2, 4, 7, 14,28
300
28x4 1) More than 100? (By how much?) 2) More than 200? (By how much?)
28x4=(20x4)+(8x4) = 80+32 = 112 More than 100 by 112 Less than 200 by 88
300
Mr. William's class has 185 books in their classroom library. He puts 45 books on each shelf. How many shelves have 45 books? (If there is a remainder, what does it mean in relationship to the story problem?)
185÷45= 45x2=90 45x2=90 90+90=180 185-180=5 4 bookshelves with a remainder of 5 books
300
Compare the fractions: 3__ 3 4 2
3<3 4 2 Three-fourths is less than three-halves, because three-fourths is one-fourth less than the whole, while three-halves is one half more than the whole
300
2 of 30 3
2x30=60=20 3 3
400
Angel borrowed a new book from the library. At 1,000 pages, it is the longest book he has ever tried to read! Today he read 115 pages. How many more pages does she have to read to reach the end?
885 1,000-115=___ 1,000-100=900 900-15=885 --or-- 1,000+____=115 115+85=200 200+800=1,000 85+800=885
400
Ms. Ruiz bought 15 packages of cups for big party. Each package contains 8 cups. How many cups did she buy?
15x8= (10x8)+(5x8) = 80+40 = 120
400
Jesley has 112 skittles to share with 7 friends. If she shares her skittles evenly with her friends and herself, how much does each friend get?
112÷8=14 8x10=80 8x2=16 8x2=16 =80+16+16 =112 So, 10+2+2=14 Each friend received 14 skittles
400
Write 1 2/3 in written form
One and two-thirds
400
Diego has 45 bags of chips. 2 are Dorritos. 5 How many bags of chips are Dorritos?
45x 2=90= 18 5 5
500
The school cafeteria serves 700 students during lunch. The disposable trays come in boxes of 36. Will there be enough trays if there are 21 boxes? 1) Write an estimate and explain your reasoning. 2) Does the cafeteria have enough trays?
1) Estimate: 35x20=700 or 40x20=800 2) 36x21=(30x20)+(30x1)+(6x20)+(6x1) =600+30+120+6 =630+126 =756
500
Jamauri baked 96 cookies for the class. He wants to fill 6 cookie tins with the same number of cookies in each tin. How many cookies should he put in each tin?
96÷6=16 6x10=60 96-60=36 6x6=36
500
Compare 1 to the landmarks (1, 1) 6 2
1 is 1 away from 1, which is equivalent to 2 6 6 2 6 1 is 5 away from 1, which is equivalent to 6 6 6 6
500
Order the following fractions from smallest to largest: 1, 3, 9, 1, 3 2 8 5 6 2
1, 3, 1, 3, 9 6 8 2 2 5
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