1. Order from shortest to longest: month, century, hour, decade, millennium, minute, week, year, day

Transcription

1 Master 6.21 Extra Practice 1 Lesson 1: Exploring Units of 1. Order from shortest to longest: month, century, hour, decade, millennium, minute, week, year, day 2. Which unit would you use to measure each period of time? a) how long you slept last night b) how long ago dinosaurs lived c) how long winter lasts 3. Replace each with >, <, or =. a) 70 years 7 decades b) 427 days 1 year c) 90 years 1 century d) 1 millennium 10 centuries e) 59 weeks 1 year f) 6 weeks 1 month 4. Sheldon is 20 years old. Write Sheldon s age as many different ways as you can. Lesson 2: Telling 1. Write each time two ways. a) b) c) 2. Draw a digital clock to show each time. a) quarter to 4 b) 21 minutes after 8 c) 9 minutes to 1 d) 25 minutes before 4

2 Master 6.22 Extra Practice 2 Lesson 3: Estimating 1. Choose the better estimate for how long each activity would take. a) Put on your coat, hat, and boots. 5 minutes or 2 hours b) Have a bath. 3 minutes or 15 minutes c) Play a game of checkers. 1 minute or 10 minutes d) Wash your hands. 1 minute or 20 minutes e) Eat supper. 2 minutes or 25 minutes 2. Estimate how long each activity will take. Have a classmate time you while you do each activity. Record the time to the nearest minute. Activity Estimated Actual Print HELLO 50 times. Cut out 20 hearts. Count by 25s to 500. Multiply 76 by 9. Lesson 4: Exploring Elapsed 1. Show the end time on each clock. a) The movie started at 3:45. b) Mabel put the roast in the It lasted 1 hour and 45 oven at 2:10. It cooked minutes. for 5 minutes. 2. Complete the chart. Length of Activity Start End 7:05 a.m. 9:14 a.m. 10:12 a.m. 7 minutes 3 hours and 2 minutes 6:15 a.m.

3 Master 6.23 Extra Practice 3 Lesson 5: Estimating and Counting Money 1. Estimate, then count. Record each estimate and amount. a) b) 2. Draw pictures to show each amount. Use the least number of bills and coins. a) $17.84 b) $24.96 c) $38.09 Lesson 6: Making Change Use play money when it helps. 1. Kanyoro bought a DVD for $ He paid for it with two $10 bills. How much change did he get? 2. Vanessa paid $36.17 for a remote control car. She paid for it with two $20 bills. a) How much change did she get? b) What is the least number of coins she could get in change? 3. Robyn paid for a $28.36 purchase with a $20 bill and a $10 bill. She got 11 coins in change. What might the coins have been? Give 2 answers. 4. Sherman got $4.55 change from a $20 bill. How much was his purchase?

4 Master 6.24 Extra Practice 4 Lesson 8: Measuring Capacity 1. Complete. a) 4 L = ml b) 7 L = ml c) 3000 ml = L d) 8000 ml = L 2. Choose the better estimate for each. a) a bottle of shampoo 300 ml or 30 L b) a jug of orange juice 4 ml or 4000 ml c) a bucket of water 9 L or 9000 L d) a container of sour cream 500 ml or 5 L 3. Atika drinks 250 ml of apple juice every morning. How long will a 3 L jug of apple juice last Atika? Explain. Lesson 9: Measuring Mass 1. Complete. a) 5 kg = g b) 8000 g = kg c) 4 kg = g d) 2000 g = kg 2. Which unit would you use to measure the mass of each object? a) a loonie b) a mouse c) a computer d) an eraser e) a stove f) a stick of gum 3. There are 8 slices of cheese in a 250-g package. What is the approximate mass of 1 cheese slice? 4. Choose the better estimate for each. a) a grapefruit 170 g or 2 kg b) a box of crackers 20 kg or 450 g c) a grape 1 g or 1 kg

5 Master 6.25 Sample Answers Extra Practice 1 Master 6.21 Lesson 1 1. Minute, hour, day, week, month, year, decade, century, millennium 2. a) Hour b) Millennium c) Month 3. a) = b) > c) < d) = e) > f) > 4. 2 decades, 240 months, 1040 weeks, 7300 days Lesson 2 1. a) 6:09; 9 minutes after 6 b) 11:58; 2 minutes before 12 c) 2:14; 14 minutes after 2 2. a) 3:45 b) 8:21 c) 12:51 d) 3:35 Extra Practice 2 Master 6.22 Lesson 3 1. a) 5 minutes b) 15 minutes c) 10 minutes d) 1 minute e) 25 minutes 2. Estimated and actual times will vary. Activity Estimated Actual Print HELLO 3 minutes 2 minutes 50 times. Cut out 20 6 minutes 5 minutes hearts. Count by 25s 1 minute 1 minute to 500. Multiply 76 by 9. 2 minutes 1 minute Lesson 4 1. a) b) 2. Length of Activity 9 minutes 7 minutes 3 hours and 2 minutes Start End 7:05 a.m. 9:14 a.m. 10:12 a.m. 12:19 p.m. 3:13 a.m. 6:15 a.m. Extra Practice 3 Master 6.23 Lesson 5 1. a) $48.20 b) $ a) b) c) Lesson 6 1. $ a) $3.83 b) 9 coins: 1 toonie, 1 loonie, 3 quarters, 1 nickel, 3 pennies 3. 6 quarters, 1 dime, 4 pennies, or 1 loonie, 6 dimes, 4 pennies 4. $15.45 Extra Practice 4 Master 6.24 Lesson 8 1. a) 4000 ml b) 7000 ml c) 3 L d) 8 L 2. a) 300 ml b) 4000 ml c) 9 L d) 500 ml days Lesson 9 1. a) 5000 g b) 8 kg c) 4000 g d) 2 kg 2. a) Gram b) Gram c) Kilogram d) Gram e) Kilogram f) Gram 3. About 31 g 4. a) 170 g b) 450 g c) 1 g