Comparison Problems
There are 3 times as many 4th graders as kindergarteners. There are 36 kindergartners. How many 4th graders are there?
Use comparison bars.
1,296
(Must show comparison bars.)
3 x 7,000
21,000
Solve using the DISTRIBUTIVE PROPERTY. Draw an area model.
85 x 6
Must have area model!
80 x 6 = 480
5 x 6 = 30
480+30=510
(Solve using any method)
354
John and his friends go apple picking. John fills 5 baskets. Each basket holds 15 apples. If 4 of John’s friends pick the same amount as John, how many apples do John and his friends pick?
5 x 15=75
4 x 75=300
300+75=375
(Don't forget about John!)
48 soccer players went to the ball game. There were 5 times as many football players as soccer players there. How many football players were at the game?
Use comparison bars.
240
(Must show comparison bars.)
4 x 50
200
Solve using the expanded form.
3 x 451
(3 x 400) + (3 x 50) + (1 x 3)
1,200+150+3=1,353
9 x 82
(Solve using any method)
Every teacher has 7 computer games. Every student has 4 computer games. There are 28 teachers and 68 students. How many computer games are there?
7 x 28 =196
4 x 68=272
196+272=468
Annie has 11 times as many bracelets as May. May has 15 bracelets. How many bracelets does Annie have?
Use comparison bars.
165
(Must show comparison bars.)
6 x 11,000,000
66,000,000
Solve using the expanded form and area model
7 x 592
MUST SHOW BOTH METHODS!
(7 x 500) + (7 x 90) + (7 x 2)
3,500+630+14=4,144
Area model should match
6 x 394
(Solve using any method)
2,364
A community park has 7 tables with a chess board painted on top. Each board has 9 rows of 9 squares. When a game is set up, 4 rows of 9 squares on each board are covered with chess pieces. If a game is set up on each table, how many total squares are NOT covered by chess pieces?
9x9=81
4x9=36
81-36=45 NOT covered
45 x 7 =315
Estimate to find the product.
3 x 45
3 x 50 = 150
7 x 2,437
(Solve using any method)
17,059
The product of 5 x 187 is between
______________ and _______________
5 x 100 = 500
5 x 200 = 1,000