MATHUNIT 6

Mrs. Gordon ordered 30 boxes

of cups for her restaurant.

Each box holds 15 cups.

How many cups did

she order.

Mrs. Gordon also needs new

plates for her restaurant.

She ordered 30 boxes. Each

box contains 12 plates.

How many plates did

she order?

Solve using pictures or models.

10 x 18 20 x 15 10 x 27 10 x 24

20 x 13 10 x 21 20 x 12 10 x 38

Solve using pictures or models.

20 x 18 30 x 15 20 x 26 30 x 24

30 x 13 20 x 21 30 x 12 20 x 28

Solve using pictures or models.

40 x 18 50 x 15 60 x 27 40 x 24

30 x 13 60 x 21 50 x 12 40 x 38

During the first 3 months of

the year, Sears sold 1,783

cameras. They sold 486 in

January and 378 in February.

How many cameras did they

sell in March?

Keira thinks that 40 x 25 is

greater than 45 x 20.

Is she correct?

How do you know?

The record for balancing glasses was 75 glasses.

If each glass holds 20 fluid ounces, what is

the total fluid ounces all of the glasses

could hold?

The American bison is the heaviest land

mammal in North America. They live

in groups of about 20 bison.

How many bison could be in 20 groups?

What are the multiplication facts for these perfect squares?

36 64 81 25

100 49 16 9

Use mental math to Multiply

using multiples of 10

20 x 60

2 x 6 = 12

20 x 6 = 120

20 x 60 = 1200

1200

30 x 80

3 x 8 = ____

30 x 8 = ____

30 x 80 = ____

50 x 40

5 x 4 = ____

50 x 4 = ____

50 x 40 = ____

The worlds fastest drummer

can hit the drum 20 times

in one second. How many

times can he hit the drum

in 1 minute?

Most people use about 2 gallons

of water while brushing their

teeth. There are 16 cups

in one gallon. How

many cups will you

use each time you

brush your teeth?

There are 8 minutes of

commercials for every 30

minutes of TV. If you watch

TV for 2 ½ hours, how many

minutes will be commercials?

Coming up next. Right after this

commercial.

If Seattle reported 197 rainy days last year. How many

days weren’t rainy?

Ready Set Go!

30 x 30 10 x 60 50 x 30 80 x 40 20 x 70

70 x 90 40 x 20 30 x 60 70 x 40 20 x 30

80 x 30 60 x 60 50 x 90 80 x 20 40 x 50

Ready Set Go!

40 x 40 10 x 70 50 x 40 80 x 60 40 x 80

70 x 30 90 x 40 30 x 70 60 x 50 30 x 40

80 x 50 60 x 70 50 x 30 70 x 40 50 x 60

The month of November has

30 days. If an amusement

park sells 300 tickets each

day in November, how many

tickets did they sell?

Hank wants to build a fence

around his yard for his dog.

If his yard is 90 feet by

60 feet, how much fencing

will Hank need?

60’

90’

HINT:Perimeter =2W + 2LOrW+W+L+L = P

Rounding to Estimate 87 x 12Round 87 to the nearest ten.

80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

7 is greater than 5 so you round up to _______

Now round 12 to the nearest ten.

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

87 = ____________

12 = ____________ SO… ______ x ______ = ________

Destiny said that 960 is a

reasonable estimate for

96 x 12.

Write the equation to explain

how she got 960?

Round It!

24 x 18 33 x 31 48 x 21 45 x 37 28 x 27

72 x 38 24 x 28 42 x 17 82 x 36 25 x 61

15 x 38 88 x 23 57 x 49 66 x 42 54 x 18

6 x 51 8 x 44 91 x 12 9 x 29 75 x 15

Julia worked for 17 hours last

week creating homemade

gifts for her family.

ABOUT how many minutes

did she spend making gifts.

Holly is baking bread for her

family. She uses a secret

family recipe. Her bread calls

for 6 cups of flour and 4

cups of brown sugar. If Holly

triples the recipe, how much

sugar will she need?

Jacob has a tree farm.

About how many orange

trees does he have?

About how many Pear

and Apple trees does

he have?

Jacob has the same amount of which

trees?

Type Rows Trees

Apple28 38

Orange38 28

Pear31 48

What is the

approximate

number of

trees on his

tree farm?

Type Rows Trees

Apple28 38

Orange38 28

Pear31 48

Morgan set up an online blog

so she could chat with her

friends. If her site averages

15 hits per day estimate the

number of hits her site will

receive in 30 days.

Using compatible numbers to ESTIMATE

Estimate 24 x 41

Round to the

nearest 10

20 X 40 = _______

But you can get a closer estimate by using

COMPATIBLE Numbers.

24 X 41 = 25 x 40

It is easy to find the

product because

25 x 4 = 100

SO… 25 x 40 = 1000

Use COMPATIBLE NUMBERS strategy to estimate the product if you can.

26 x 42 31 x 46 21 x 25 58 x 12 22 x 26 78 x 21

36 x 49 66 x 31 64 x 24 21 x 19 76 x 39 32 x 24

89 x 43 79 x 79 46 x 18 86 x 37 53 x 54 68 x 39

29 x 43 48 x 16 68 x 68 14 x 16 33 x 71 19 x 27

In 1858 two ships connected a

telegraph cable across the

Atlantic Ocean for the very first

time. Using the diagram,

estimate the total distance of

cable used.

1,010 miles 1,016 miles

How would you use estimation to decide which has the

greater product?

39 x 21 32 x 32

__ x __ __ x __

____ ____

Mrs. “B” ordered 28 trays of

flowers for the garden club.

Each tray contains 24 flowers.

What is a good estimate of

the number of flowers the

garden club will be planting.

Lydia estimates that she can

earn $75 per week this

summer working part time.

How many weeks will she

have to work in order to buy

the new tablet that costs

$300?

Bradon wants to sell his

computer so he can buy a

new $857 laptop.

If he sells his old computer

for $250, how much more

money does he need to

buy his new laptop?

Renee’ swims laps in her pool

for 65 minutes every day.

Estimate the number of

minutes she will swim if she

swims every day for the next

2 weeks.

Grant got a poster for the

wall in his bedroom.

It is quite large, measuring

4 feet wide and 7 feet long.

What is the perimeter of

the poster?REMEMBER:

L + L + W + W = P or 2xL + 2xW = P

Destiny and Deja made cookies to

sell at the Holiday bake sale.

They sold every cookie for a

profit of $72.

If they sold a total of 12 dozen

cookies, how much did they

sell each cookie for?

Francis and her family bought

3 foot long subs from

Subway. They spent $6 on

drinks and spent a total

of $24. How much did each

sandwich cost?

Jasmyn, Vanessa, and Shayla

are on their way to the

movies.

They each have $12 to

spend. If their tickets cost

$7.50 each, how much can

they spend on snacks?

Christopher and Tyler ride their

bikes around the perimeter of

the park every day after school.

The perimeter is 3 miles long.

If they rode around the park 5

times each day for 5 days, how

many total miles will they have

travelled?

Sondra spent $20 on art

supplies including tax.

She bought colored pencils for

$4.50 and a sketch pad for

$12.20. How much

change did

Sondra receive?

Sean and Lex went to the music

store. Sean bought 4 CDs and

2 DVDs. Lex got 3 CDs and a

pack of DVRs. How much did

they spend together?CHARLIE’S DISCOUNT MUSIC STORE

DVRs $6

DVDs $11

CDs $9

Cameron went to

McDonald’s to get

lunch for the class.

He bought 5 burgers,

12 cheeseburgers,

8 chicken sandwiches,

25 orders of fries, and

25 drinks.

What did lunch cost?

BURGER $1.00

CHEESEBURGER $1.50

CHICKEN SANDWICH $1.00

FRENCH FRIES $1.00

SOFT DRINKS $1.00

ALL DONE!