Multi-Digit Multiplication QUIZ © 2012 Teaching With a Mountain View Multi-Digit Multiplication Quiz Explain the purpose of “placeholders” using a multi-digit multiplication problem of your choice. Word Problems 1. Mrs. Marjorie was the music teacher at Sky Way Elementary. She needed to buy new guitars for the school. She bought 24 new guitars for $98 each. How much did she spend? 2. David was training for a 5k running race. Each day of the week, he ran 65 minutes. How many minutes does he run in 4 weeks? 3. Superman saved 47 people in 34 different cities. How many people were saved total? 4. Write and solve a word problem that requires multi-digit multiplication. © 2012 Teaching With a Mountain View Multi-Digit Multiplication Quiz Explain the importance of understanding place value before you learn how to do multi-digit multiplication. Multi-Step Word Problems 1. The Caplan family was going to New York City to ring in the new year. 16 family members each paid $341 for their plane ticket to NYC, and $298 for their plane ticket back home. How much did all 16 of them pay for their plane tickets in total? 2. When the Caplan family was in NYC, they had to share 8 taxis. They took 24 taxi rides total, and each one cost $49. How much did they pay in taxi cab fare? 3. The Caplan family loved trying out all of the different restaurants the city had to offer. On average, each family member spent $13 at each meal. They were in the city for 7 days, and ate 3 meals per day. How much did it cost each person to eat while they were there? How much did it cost the entire family (16 of them) to eat while they were there? 4. Write and solve a problem the Caplan family may have to solve on their trip. © 2012 Teaching With a Mountain View Multi-Digit Multiplication Quiz 2 x 2 and 3 x 2 Multiplication Solve using the traditional algorithm and another method to check. 23 x 34 321 x 70 65 x 98 56 x 42 79 x 95 645 x 52 876 x 44 292 x 63 3 x 3 and 4 x 3 Multiplication Solve using the traditional algorithm. 563 x 873 348 x 232 © 2012 Teaching With a Mountain View 5,875 x 132 Multi-Digit Multiplication Quiz Answer Key Explain the purpose of “placeholders” using a multi-digit multiplication problem of your choice. Answers will Vary Word Problems 1. Mrs. Marjorie was the music teacher at Sky Way Elementary. She needed to buy new guitars for the school. She bought 24 new guitars for $98 each. How much did she spend? 24 x 98 = 2,352 2. David was training for a 5k running race. Each day of the week, he ran 65 minutes. How many minutes does he run in 4 weeks? 4 x 7 = 28 (mental math) 28 x 65 =1,820 3. Superman saved 47 people in 34 different cities. How many people were saved total? 47 x 34 =1,598 4. Write and solve a word problem that requires multi-digit multiplication. © 2012 Teaching With a Mountain View Multi-Digit Multiplication Quiz Answer Key Explain the importance of understanding place value before you learn how to do multi-digit multiplication. Answers will Vary Multi-Step Word Problems 1. The Caplan family was going to New York City to ring in the new year. 16 family members each paid $341 for their plane ticket to NYC, and $298 for their plane ticket back home. How much did all 16 of them pay for their plane tickets in total? 5,456 + 4,768 = $10, 233 TOTAL 341 x 16 =5,456 (Tickets there) 298 x 16 = 4,768 (Tickets back) 2. When the Caplan family was in NYC, they had to share 8 taxis. They took 24 taxi rides total, and each one cost $49. How much did they pay in taxi cab fare? 24 x 8= 192 (Total Taxi Rides For ALL) 192 x 49 = 9,408 (FINAL COST FOR ALL) 3. The Caplan family loved trying out all of the different restaurants the city had to offer. On average, each family member spent $13 at each meal. They were in the city for 7 days, and ate 3 meals per day. How much did it cost each person to eat while they were there? How much did it cost the entire family (16 of them) to eat while they were there? 624 x 7 = $4,368 TOTAL 13 x 3 = 39 (Per Day Per Person) 39 x 16 = 624 (Per Day For Entire Group) 4. Write and solve a problem the Caplan family may have to solve on their trip. © 2012 Teaching With a Mountain View Multi-Digit Multiplication Quiz Answer Key 2 x 2 and 3 x 2 Multiplication Solve using the traditional algorithm and another method to check. 23 x 34 782 321 x 70 22,470 65 x 98 6,370 645 x 52 33,540 56 x 42 2,352 79 x 95 7,505 876 x 44 38,544 292 x 63 18,396 3 x 3 and 4 x 3 Multiplication Solve using the traditional algorithm. 563 x 873 491,499 348 x 232 80,736 © 2012 Teaching With a Mountain View 5,875 x 132 775,500