mcgraw hill lesson 8 problem solving reasonable answers

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McGraw Hill Math Grade 4 Chapter 10 Lesson 8 Answer Key Problem Solving: Working Backward

Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 10 Lesson 8 Problem Solving: Working Backward to secure good marks & knowledge in the exams.

McGraw-Hill Math Grade 4 Answer Key Chapter 10 Lesson 8 Problem Solving: Working Backward

Question 1. The owner of a gift stop has a large spool of wrapping paper. She uses 13\(\frac{2}{5}\) yards of paper in one week and 16\(\frac{1}{5}\) yards of paper the next week. She has 41\(\frac{1}{5}\) yards of paper left over. How many yards of wrapping paper did she start with? Answer: 70\(\frac{4}{5}\)

Explanation: The owner of a gift stop has a large spool of wrapping paper She uses 13\(\frac{2}{5}\) yards of paper in one week 16\(\frac{1}{5}\) yards of paper the next week She has 41\(\frac{1}{5}\) yards of paper left over Add to find 13\(\frac{2}{5}\) + 16\(\frac{1}{5}\) + 41\(\frac{1}{5}\) = 70\(\frac{4}{5}\) The owner of a gift shop has 70\(\frac{4}{5}\) yards of wrapping paper she started with.

Question 2. Toshi drove from home to work. Then he drove from work to Beth s house. He drove 13\(\frac{1}{4}\) miles south, then 29 miles east, then another 8\(\frac{1}{4}\) miles south. He drove a total of 55\(\frac{3}{4}\) miles for the entire day. How many miles did he drive from home to work? Answer: 70\(\frac{4}{5}\)

Explanation: Toshi drove from home to work Then he drove from work to Beth s house He drove 13\(\frac{1}{4}\) miles south Then 29 miles east Then another 8\(\frac{1}{4}\) miles south 13\(\frac{1}{4}\) + 29 + 8\(\frac{1}{4}\)  = 50\(\frac{2}{4}\) He drove a total of 55\(\frac{3}{4}\) miles for the entire day 55\(\frac{3}{4}\) – 50\(\frac{2}{4}\) = 5\(\frac{1}{4}\) So, Toshi drove 5\(\frac{1}{4}\) miles from home to work.

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Math Connects: Concepts, Skills, and Problem Solving Course 3, Grade: 8 Publisher: Glencoe/McGraw-Hill

Math connects: concepts, skills, and problem solving course 3, title : math connects: concepts, skills, and problem solving course 3, publisher : glencoe/mcgraw-hill, isbn : 78740509, isbn-13 : 9780078740503, use the table below to find videos, mobile apps, worksheets and lessons that supplement math connects: concepts, skills, and problem solving course 3., textbook resources.

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McGraw Hill My Math Grade 2 Chapter 6 Lesson 8 Answer Key Problem-Solving Strategy: Guess, Check, and Revise

All the solutions provided in  McGraw Hill My Math Grade 2 Answer Key PDF Chapter 6 Lesson 8 Problem-Solving Strategy: Guess, Check, and Revise will give you a clear idea of the concepts.

McGraw-Hill My Math Grade 2 Answer Key Chapter 6 Lesson 8 Problem-Solving Strategy: Guess, Check, and Revise

2. Plan How will I solve the problem?

4. Check Is my answer reasonable? Explain. Answer:

Practice the Strategy

3. Solve I will…

4. Check Is my answer reasonable? Explain. Answer: The letters delivered this month are 420 letters.

Explanation: 1. Given that a mail carrier delivered 430 letters last month and this month he delivered fewer letters than last month and he delivered 850 letters in both months in all. We need to find the letters delivered this month. 2. Here, we will solve this by subtracting the letters he delivered in both months and last month delivered letters. 3. Last month delivered letters is 430 and the letters delivered in two months is 850. So the letters delivered this month are 850-430 which is 420 letters. 4. The answer is reasonable. As mail carrier delivered this month less letters and 420 is less than 430. So the answer is reasonable.

Apply the Strategy

Question 1. A store sells raisins in packages of 130, 165, and 170. Rosa wants to buy 300 raisins. Which two packages will she buy? packages of ____________ and _____________ Answer: The packages are 130 and 170.

Explanation: 1. Given that a store sells raisins in packages of 130, 165, and 170. We should find which two packages she will buy. 2. By adding two packages which make 300. 3. By adding 130 and 170 which is 130+170 we will get 300. So Rosa will buy 130 and 170 packages. 4. The answer is reasonable, by adding 130 and 170 we will get 300.

Explanation: 1. Given that Alexa’s ant farm has 120 ants and she bought another ant farm now she has 300 ants. So we need to find the ants on the second ant farm. 2. By doing subtraction we can find the ants in the second ant farm. 3. By subtracting 120 from 300 we will get the ants on the second ant farm which is 300-120 = 180 ants. 4. The answer is reasonable, as 120+180 we will get 300.

Explanation: 1. Given that Tao needs to read three books that total 500 pages. We need to find the three books that he had read. 2. Here, we will perform an addition that gets a total of 500. 3. By adding 115, 185 and 200 we will get 115+185+200 = 500. 4. The answer is reasonable. By adding we got 500

Review the Strategies

Choose a strategy

• Guess, check, and revise.
• Act it out.
• Use logical reasoning.

Explanation: 1. Given that Clara counted 185 flowers on her walk and her dad counted 139 flowers. We need to find the total count. 2. Here, we will perform addition to get the total count. 3. By adding both Clara and her dad’s counted flowers we will get 185+139 which is 324 flowers.

Explanation: 1. Given that Chelsea collects sand dollars and the number she has collected is greater than 400 and less than 460.  We need to find the sand dollars that Chelsea collected. 2. Here, we will find the sand dollars with the help of the given clue. 3. As the is in between 400 and 460 and in the hundreds place, one less than the number in the tens place which is 6-1 = 5. The number in the one’s place is two more than the number in the tens place which is 5+2 =7. So the number of sand dollars that Chelsea collected is 457.

Explanation: 1. Given that one pet store has 289 angel fish and another pet store has 132 angel fish. We need to find the number of angel fishes altogether. 2. By adding the 289 angel fishes in one store and 132 angel fishes in another store we can get the value altogether. 3. Here, there are 289 angles fish in one store and 132 angel fish in another store. So the total number of fish altogether is 289+132 which is 421 angel fish.

McGraw Hill My Math Grade 2 Chapter 6 Lesson 8 My Homework Answer Key

Underline what you know. Circle what you need to find out. Guess, check, and revise to solve.

Question 1. 350 people went to the movie on Saturday. Fewer people went to the movie on Sunday. About 600 people went to the movies in all. How many people went to the movie on Sunday? _____________ people Answer: 250 people went to the movie on Sunday.

Explanation: 1. Given that 350 people went to the movie on Saturday and fewer people went to the movie on Sunday. About 600 people went to the movies in all. We need to find the total number of people who went to the movie on Sunday. 2. By subtracting 350 people from 600 people who went to the movies in all we will get the total number of people who went to the movie on Sunday. 3. Here, 600-350 which is 250 people who went to the movie on Sunday. 4. The answer is reasonable. As fewer people went to the movie on Sunday rather than Saturday.

Question 2. Pam has 65 purple flowers, 50 yellow flowers, and 75 red flowers in her garden. She needs a total of 125 flowers in 2 colors. Which color of flowers should she pick? _____________ flowers Answer: Pam picked 50 yellow flowers and 75 red flowers.

Explanation: 1. Given that Pam has 65 purple flowers, 50 yellow flowers, and 75 red flowers in her garden. We need to find which two color flowers should she pick. 2. By adding two color flowers which make 125 we can find which color of flower she picked. 3. By adding 50 yellow flowers and 75 red flowers 50+75 makes 125 flowers. So Pam picked 50 yellow flowers and 75 red flowers. 4. The answer is reasonable. By adding 50 and 75 we have got 125 flowers.

Explanation: 1. Given that garden has 145 corn stalks it also has some tomato plants and there are about 245 corn and tomato plants in my garden. We need to find the number of tomato plants in the garden. 2. By subtracting, we can know the number of tomato plants in the garden. 3. Here, we need to subtract 145 corn stalks from 245 corn and tomato plants which are 245-145 = 100. So there are 100 tomato plants.

Math at Home Tell story problems to your child. Have him or her practice guessing on answer and then checking It. Answer: Tom has 23 blue glitters, 15 yellow glitters, and 30 red glitters in his bag. He needs a total of 45 glitters in 2 colors. Which color of glitters should he pick?

Explanation: 1. Tom has 23 blue glitters, 15 yellow glitters, and 30 red glitters in his bag. We need to find which two color glitters he picked. 2. By adding two glitters, we can know which colors he picked. 3. Here, we will add 15 yellow glitters and 30 red glitters which is 15+30 = 45 glitters. So Tom picks 15 yellow glitters and 30 red glitters as they make a total of 45 glitters. 4. The answer is reasonable. By adding 15 and 30 we will get 45.

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