NOTES FOR THE WEEK OF 4-21 TO 4-25 Ms. Lonsdale’s 7 th Grade Math

NOTES FOR THE WEEK OF 4 -21 TO 4 -25

Ms. Lonsdale’s 7th Grade Math

Homeroomoom

Read SILENTLY until class begins!

Monday, 4-21-14Bellwork

Which of the following has the same solution to x as 4x + 2 = 18?

A) 6x = 18B) 6x – 4 = 26C) 2 – 4x = 18D) 8x – 10 = 22

HINT – Solve for x then plug that value

into the answer choices!

Announcements

Homework is due on Friday!Tutoring tonight (MCT2 prep – number system)

Tutoring on Thursday (make-up work)

Quiz on Friday (know your metric and customary conversions!)

Random Factoid

An electric eel will short-circuit itself if put into saltwater.

METRIC SYSTEM VS. CUSTOMARY SYSTEM

THE METRIC SYSTEM!

The Metric System

milli- centi- deci- deca- hecto- kilo-

÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10

Biggest to smallest: K H D (unit) D C M

King Henry Died Unexpectedly Drinking Chocolate MilkKing Henry Doesn’t Usually Drink Chocolate Milk

Metric Conversions

Multiply by 10

Divide by 10

See It

The metric system is a group of units that are based around factors of 10.

Millimeter 1000 millimeters = 1 meter

Centimeter 100 centimeters = 1 meter

Meter

Kilometer 1000 meters

mm x10 cm x100 m x1000 km


÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10

See It

What do we use these units for?

Millimeters – tiny things (insects, erasers, eyelashes)

Centimeters – smaller things (feet, pencils, pc screen)

Meter – bigger things (people, cars, buildings)Kilometers – really big things (lengths of

highways, distances between cities, marathon races)

See It

See It

100.4 km = _____ m

200.4 m = _____ mm

5,000,000 cm = _____ km

8,450 cm = _____ m


÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10

Work It

200 m. 50cm = ______ mm

12,500 mm = ______ m

5,400 cm = ________ m

3 km = _______ cm

2,400 m = ______ cm


÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10

Think It

Xavier ran 200 meters each day for 7 days at basketball practice. How many kilometers did he run during these five days?

Work It

Will the following conversions results in a bigger number of units or a smaller number of units?

1. Millimeters to meters

2. Kilometers to centimeters

3. Centimeters to millimeters

4. Meters to centimeters

Convert the following distances:

5. 4,500 cm = _____ m

6. 2,000 m = _____ mm

7. 57,300 mm = _____ cm

8. 1.2 km = _____ cm

Work It

Number a paper 1-24

For today, just complete the problems that deal with conversions of distance/length:

#1, 2, 3, 5, 7, 8, 10, 11, 12, 16, 18, 19, 20Pg. 199 (workbook)

Exit Ticket

Convert the following:

1) 30,000 m = ________ km2) 54,000 mm = _________ cm2) 30,000 cm = _________ m3) 54 m = _________ mm

Homeroomoom


Tuesday, 4-22-14 Bellwork

John is planting a fence around a garden that forms a right triangle as shown below. How long is the missing side to this fence?

A) 17 feetB) 13 feetC) 7 feetD) 169 feet

5 feet

12 feet

? feet

HINT: a2+b2 = c2

Announcements

Homework is due on Friday!

Tutoring on Thursday (make-up work)

QUIZ on FRIDAY!!

Random Factoid

Baboons cannot throw overhand.

BACK UP – Multiply/Divide with powers of 10

BACK UP – Multiply/Divide with powers of 10

12 43,200 12,400x 100 ÷ 1,000 x 10,000

800 4,550,000 4.26÷ 1000 ÷ 100,000 x 1,000

18.4 550.252 50.003÷ 100 ÷ 100 x 100

Weight/Mass1 kilogram = ______ grams1 gram = ______ milligrams• 1 mg ~ grain of sand

• 1 g ~large paper clip

• 1 kg ~ textbook

See It


÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10

See It

1) 2 kg = _____ g 2) 1,500 g = ___ kg

3) 3 g = _____ mg 4) 5,500 mg = _____ g


÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10

See It

A bag of sugar weighs 2.5 kg. Thomas takes out 240 grams. How many grams are left?

Work It 1

A glass of orange juice contains 185 milligrams of Vitamin C. Reshunna drinks 12 glasses. How many grams of Vitamin C did she get?

Work It 2

Ms. Lonsdale takes 840 mg of medicine each day for 30 days. How many kilograms of medicine does she take?

Work It 3

An elephant’s eyeball weighs 2.4 kg. A mouse’s eyeball weighs 3 grams. How many more grams does the elephant’s eyeball weigh than the mouse’s?

Own It

Complete the problems on page 199 of the workbook

Remember, before you solve the problem, you need to convert the units so you’re working with all the same units.

Extra Credit (pg. 200)You should be able to do ALL problems except for…# 4, 6, 14, 17, 21, 23

Complete these before you begin on #1-24 from the Practice Book (pg. 199)

1. 1,800 mg = ______ g2. 400 mg = ____ g3. 84,500 g = _____ kg4. 2.1 kg = _____ g 5. A barn owl eats 250 grams of mice each day for 6 days. Then it eats 3,500 milligrams of bugs on Sunday. How many grams does the owl eat in all? 6. A monkey weighs 5.6 kilograms. A hummingbird weighs 3 grams. How many more grams does the monkey weigh than the hummingbird?

Exit Ticket

1) 7,900 mg = _____ g

2) 4.35 kg = _____ g

3) A toy dinosaur weighs 524 grams. Each piece of toy dinosaur food weighs 15 milligrams. How much more does the toy dinosaur weigh than a piece of its food?

Homeroomoom


Wednesday, 4-23-14 Bellwork

The mass of a house cat is 6.5 kilograms. The mass of its toy is 125 grams. How much more does the cat weigh than its toy?

A) 6,625 gB) 6,375 gC) 118.5 gD) 6.0375 g

Announcements

Homework is due on Friday!Tutoring tomorrow night!QUIZ on FRIDAY! (Customary and Metric units of measure) Memorize your conversion charts!

Random Factoid

In the first month of the Bell Telephone Company’s existence in 1877, only six telephones were sold!

Ms. Lonsdale is trying to fill up a water tank to make water balloons.

She has a hose that pumps out 50 mL of water every second. If the tank fills in 4 minutes, how many liters of water does her water tank hold?

Think It

TSW choose the appropriate unit of measure for the volume of a given amount of liquid

TSW convert metric units of capacity

Today’s Objective

Units of capacity – shows how much liquid a container can hold..

See It

Customary Units

Units of capacity – shows how much liquid a container can hold.

See It – Metric Units of Capacity


÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

x 10x 10x 10x 10x 10x 10


Milliliter (mL)

Liter (L)

See It


Milliliter (mL)

1000 mL = 1 L

Liter (L)

See It

3,400 mL = ________ L

425 L = __________ mL

23 mL = ________ L

385 L = ________ kL

562,000 mL = ________ kL

See It

Ms. Lonsdale’s bottle of Dr. Pepper is 500mL. How many bottles does she need to have the same as a 2L bottle of soda?

2L = 2000mL 500mL+ 500mL+ 500mL+ 500mL 2000mL

See It

The water fountain in the 8th grade hall dispenses water at 152 mL every second. The water fountain by the front office dispenses water at a rate of 2.84 L every 20 seconds. Which water fountain releases the most water?

152 mL in 1 second2.84 L in 20 seconds= 2,840 mL in 20 seconds2,840 ÷ 20 = 142 mL in 1 secondThe 8th grade hallway’s water fountain

releases more water.

See It

Complete 3 rounds of problems. The choice is yours for each round!

Title = “You Choose Problems”

Write down important numbers

Write down key words/phases and explain WHY you chose those words

(i.e. each = multiply)BOX your answers!

Work It – You Choose!

1) 24L = ______ mL

2) 387 mL = ______ L

3) A bottle of Sprite is 850 milliliters big. A larger bottle of Dr. Pepper is 2 liters big. How much bigger is the bottle of Dr. Pepper than the bottle of Sprite?

Exit Ticket

Thursday, 4-24-14 BellworkRecreate the customary conversions chart as best you can from memory…

DUE at the end of today…

Part 1: Complete practice for quiz tomorrow (conversions of customary AND metric units – NO CONVERSION SHEET ALLOWED!

Part 2: Finish #1-24 on pg. 199

Part 3: Finish at least 2 choices from the three rounds of metric problems from yesterday.

Staple these together in the order shown above.

Friday, 4-25-14 Bellwork

Makayla purchases 12 cartons of Capri Sun. If each carton holds 700 millileters of juice, how many liters of Capri Sun does Makayla have in all?

A) 8,400 LB) 58 LC) 688 LD) 8.4 L

ANNOUNCEMENTS!

Homework is due today!

Random Factoid

Agenda

Complete quiz on 4a.SHOW YOUR WORKRUBIES!

Finish Step 1, 2, 3 from yesterday.

Complete MCT2 Ready Packet (extra credit)

Documents

NOTES FOR THE WEEK OF 4-21 TO 4-25 Ms. Lonsdale’s 7 th Grade Math