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Ms. Lonsdale’s 7 th Grade Math

Ms. Lonsdale’s 7 th Grade Math. Notes for the week of 4-21 to 4-25. Homeroom oom. 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 = 18 B) 6x – 4 = 26 C) 2 – 4x = 18 D) 8x – 10 = 22.

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Ms. Lonsdale’s 7 th Grade Math

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  1. Ms. Lonsdale’s 7th Grade Math Notes for the week of 4-21 to 4-25

  2. Homeroomoom Read SILENTLY until class begins!

  3. Monday, 4-21-14Bellwork Which of the following has the same solution to x as 4x + 2 = 18? A) 6x = 18 B) 6x – 4 = 26 C) 2 – 4x = 18 D) 8x – 10 = 22 HINT – Solve for x then plug that value into the answer choices!

  4. 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!)

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

  6. THE METRIC SYSTEM! Metric system vs. customary system

  7. The Metric System ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10 Biggest to smallest: K H D (unit) D C M King Henry Died Unexpectedly Drinking Chocolate Milk King Henry Doesn’t Usually Drink Chocolate Milk

  8. Metric Conversions Divide by 10 Multiply by 10

  9. 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 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10

  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)

  11. See It

  12. 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 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10

  13. 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 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10

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

  15. Work It Will the following conversions results in a bigger number of units or a smaller number of units? Millimeters to meters Kilometers to centimeters Centimeters to millimeters Meters to centimeters Convert the following distances: 4,500 cm = _____ m 2,000 m = _____ mm 57,300 mm = _____ cm 1.2 km = _____ cm

  16. 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, 20 Pg. 199 (workbook)

  17. Exit Ticket Convert the following: 1) 30,000 m = ________ km 2) 54,000 mm = _________ cm 2) 30,000 cm = _________ m 3) 54 m = _________ mm

  18. Homeroomoom Read SILENTLY until class begins!

  19. 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? 17 feet 13 feet 7 feet 169 feet ? feet 5 feet 12 feet HINT: a2+b2 = c2

  20. Announcements Homework is due on Friday! Tutoring on Thursday (make-up work) QUIZ on FRIDAY!!

  21. Random Factoid Baboons cannot throw overhand.

  22. BACK UP – Multiply/Divide with powers of 10

  23. BACK UP – Multiply/Divide with powers of 10 12 43,200 12,400 x 100 ÷ 1,000 x 10,000 800 4,550,000 4.26 ÷ 1000 ÷ 100,000 x 1,000 18.4 550.25250.003 ÷ 100 ÷ 100 x 100

  24. See It Weight/Mass 1 kilogram = ______ grams 1 gram = ______ milligrams • 1 mg ~ grain of sand • 1 g ~large paper clip • 1 kg ~ textbook ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10

  25. 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 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10

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

  27. 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?

  28. Work It 2 Ms. Lonsdale takes 840 mg of medicine each day for 30 days. How many kilograms of medicine does she take?

  29. 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?

  30. Own It Complete the problems on page 199 of the workbook Remember, before you solvethe 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

  31. Complete these before you begin on #1-24 from the Practice Book (pg. 199) 1. 1,800 mg = ______ g 2. 400 mg = ____ g 3. 84,500 g = _____ kg 4. 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?

  32. Exit Ticket 7,900 mg = _____ g 4.35 kg = _____ g 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?

  33. Homeroomoom Read SILENTLY until class begins!

  34. 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? 6,625 g 6,375 g 118.5 g 6.0375 g

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

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

  37. Think It 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?

  38. Today’s Objective TSW choose the appropriate unit of measure for the volume of  a given amount of liquid TSW convert metric units of capacity

  39. See It Units of capacity – shows how much liquid a container can hold.. Customary Units

  40. See It – Metric Units of Capacity Units of capacity – shows how much liquid a container can hold. ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 milli- centi- hecto- kilo- deci- deca- x 10 x 10 x 10 x 10 x 10 x 10

  41. See It Units of capacity – shows how much liquid a container can hold. Milliliter (mL) Liter (L)

  42. See It Units of capacity – shows how much liquid a container can hold. Milliliter (mL) 1000 mL = 1 L Liter (L)

  43. See It 3,400 mL = ________ L 425 L = __________ mL 23 mL = ________ L 385 L = ________ kL 562,000 mL = ________ kL

  44. 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

  45. 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 second 2.84 L in 20 seconds= 2,840 mL in 20 seconds 2,840 ÷ 20 = 142 mL in 1 second The 8th grade hallway’s water fountain releases more water.

  46. Work It – You Choose! 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!

  47. Exit Ticket 24L = ______ mL 387 mL = ______ L 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?

  48. Thursday, 4-24-14 Bellwork Recreate the customary conversions chart as best you can from memory…

  49. 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.

  50. 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? 8,400 L 58 L 688 L 8.4 L

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