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McGraw Hill My Math Grade 5 Chapter 2 Lesson 5 Answer Key Problem-Solving Investigation: Make a Table

All the solutions provided in McGraw Hill Math Grade 5 Answer Key PDF Chapter 2 Lesson 5 Problem-Solving Investigation: Make a Table  will give you a clear idea of the concepts.

McGraw-Hill My Math Grade 5 Answer Key Chapter 2 Lesson 5 Problem-Solving Investigation: Make a Table

Answer: Sixty-three out of every 100 households owned at least one pet. We need to find households owned at least one pet. households out of ten thousand owned at least one pet.

2. Plan I will make a ___ to solve the problem. Answer: I will make a table to solve the problem.

4. Check Is my answer reasonable ? Explain. Use mental math to multiply. 63 × 100 = _____ Answer: The answer is 6300.

Explanation: Given multiplicand is 63 and the multiplier is 100 By multiplying both multiplicand 63 and multiplier 100, we get the value as The multiplication of 63 × 100 is 6300.

Practice the Strategy Nestor is saving money to buy a new camping tent. Each week he doubles the amount he saved the previous week If he saves $1 the first week, how much money will Nestor save in 7 weeks?

1. Understand

What facts do you know? ________________ Answer: Nestor is saving money to buy a new camping tent. He saves $1 the first week.

What do you need to find? ________________ Answer: We need to find out how much money will Nestor save in 7 weeks.

2. Plan ________________ Answer: By adding money every week.

3. Solve ________________ Answer: $127

Explanation: 1 + 2 + 4 + 8 + 16 + 32 + 64 = $127

Is my answer reasonable? Explain. ________________ Answer: Yes, the answer is reasonable.

Explanation: He saves $1 the first week Each week he doubles the amount he saved the previous week. $1 + $2 + $4 + $8 + $16 + $32 + $64 = $127

Apply the Strategy

Solve each problem by making a table.

Question 1. Betsy is saving to buy a bird cage. She saves $1 the first week, $3 the second week, $9 the third week, and so on. How much money will she save in 5 weeks? Answer: 81 dollars

Explanation: Betsy saves $1 for the first week $3 for the second week $9 for the third week $27 for the fourth week $81 for the fifth week

Question 2. Kendall is planning to buy a laptop for $1,200. Each month she doubles the amount she saved the previous month. If she saves $20 the first mönth, in how many months will Kendall have enough money to buy the laptop? Answer: 6 months

Explanation: Kendall is planning to buy a laptop for $1,200 Each month she doubles the amount she saved the previous month If she saves $20 the first month. In 1st month he saved $20 2nd month he saved $20 + $40 = $60 3rd month he saved $80 + $60 = $140 4th month he saved $160 + $140 = $300 5th month he saved $300 + $320 = $620 6th month he saved $620 + $640 = $1280 Hence after 6 months she can save enough to buy the laptop.

Question 3. Mrs. Piant’s yearly salary is $42,000 and increases $2,000 per year. Mr. Piant’s yearly salary is $37,000 and increases $3,000 per year. In how many years will Mr. and Mrs. Piant make the same salary? Answer: 5 years

Explanation: Let us assume the x years will Mr. and Mrs. Piant make the same salary. 42000 + 2000x = 37000 + 3000x 3000x – 2000x = 42000 – 37000 1000x = 5000 x = 5 Hence in 5 years will Mr. and Mrs. Piant make the same salary.

Review the Strategies

A card shop recorded how many packs of trading cards it sold each day. Use the table to solve Exercises 5—7.

Use any strategy to solve each problem.

• Make a table.
• Use the four-step plan.

Question 5. In which week did they sell the most packs of cards? Answer: In week 2 they sold the most packs of cards.

Explanation: The week 2 trading cards sold are 48 + 43 + 45 + 41 + 39 = 216 178 216 180

Question 6. In which week did they sell the least amount? Answer: In week 1 they sold the least amount.

Explanation: The week 1 trading card sold are 28 + 32 + 38 + 44 + 36 = 178

Question 7. How many more packs did they sell in Week 2 than in Week 3? Answer: There are 36 more packs they sold in week 2 than in week 3.

Explanation: In week 2 trading cards sold are 216 In week 3 trading cards sold are 180 The difference between week 2 in week 3 is 216 – 180 = 36

Question 8. A putt-putt course offers a deal that when you purchase 10 rounds of golf, you get 1 round for free. If you played a total of 35 rounds, how many rounds did you purchase? Answer: 32 rounds.

Explanation: A putt-putt course offers a deal that when you purchase 10 rounds of golf, you get 1 round for free. 10 + 1 =11 rounds you played a total of 35 rounds. This means you played 35 ÷ 11 3.1 = 3 times of 11 rounds + 2 rounds in 3 times of 11 rounds we purchased 30 rounds and got 3 free rounds plus 2 more rounds. Total round 35 rounds =  3(10 rounds) + 3 free rounds + 2 more rounds You purchased 30 +  2 = 32 rounds and got 3 free rounds.

Explanation: Given, The amount she saved in the first week = $24 Each week she saves $6 Let us assume she saved x weeks after the first week = 24 + 6x if x = 5 Her total saving in 6 weeks is 24 + 6 (5) 24 + 30 = $54

McGraw Hill My Math Grade 5 Chapter 2 Lesson 5 My Homework Answer Key

Problem Solving

Question 1. Mathematical PRACTICE 8 Look for a Pattern In a recent year, one United States dollar was equal to about 82 Japanese yen. How many Japanese yen are equal to $100? $1,000? $10,000? Answer: 82 yens, 8200 yens, 82000 yens, 820000 yens.

Explanation: 1 dollar = 82 yens $100 = 100 × 82 = 8200 yens $1,000 = 1000 × 82 = 82000 yens $10, 000 = 10,000 × 82 = 820000 yens.

Question 2. A local restaurant offers a deal if you purchase 3 medium pizzas, you get 2 side dishes for free. If you get a total of 8 side dishes, how many pizzas did you buy? Answer: 12 medium pizzas.

Explanation: He purchased 3 medium pizzas, he got 2 side dishes for free. for buying 6 medium pizzas we will get 4 side dishes free for buying 9 medium pizzas we will get 6 side dishes free for buying 12 medium pizzas we will get 8 side dishes free. Hence to get a total of 8 side dishes, we would buy 12 medium pizzas.

Question 3. A recipe for potato salad calls for one teaspoon of vinegar for every 2 teaspoons of mayonnaise. How many teaspoons of vinegar are needed for 16 teaspoons of mayonnaise? Answer: 8 spoons of vinegar.

Explanation: 1 teaspoon of vinegar is equal to 2 teaspoons of mayonnaise.

Question 4. A package of 4 mechanical pencils comes with 2 free erasers. If you get a total of 1 2 free erasers, how many packages of pencils did you buy? Answer: 6 packages.

Explanation: There are 6 packages of pencils.

Explanation: Veronica is saving money to buy a saddle for her horse that costs $175. The amount increased every month by $5. Veronica saved in the first month = $10 $15 and $20 175 = n ÷ 2 (2 × 10 + (n-1)5) 350 = 5n 2 + 15n 5n 2 + 15n – 350 = 0 n 2 + 3n – 70 = 0 n = -10, 7 Hence it will take 7 months for veronica to save $175 for the saddle.

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McGraw-Hill My Math Grade 5 Volume 1

Textbook: mcgraw-hill my math grade 5 volume 1 isbn: 9780021150243.

Use the table below to find videos, mobile apps, worksheets and lessons that supplement McGraw-Hill My Math Grade 5 Volume 1 book.

Chapter 1: Place Value

Lesson 1: place value through millions, lesson 2: compare and order whole numbers through millions, lesson 3: hands on: model fractions and decimals, lesson 4: represent decimals, lesson 5: hands on: understand place value, lesson 6: place value through thousandths, lesson 7: compare decimals, lesson 8: order whole numbers and decimals, chapter 2: multiply whole numbers, lesson 1: prime factorization, lesson 2: hands on: prime factorization patterns, lesson 3: powers and exponents, lesson 4: multiplication patterns, lesson 5: hands on: use partial products and the distributive property, lesson 6: the distributive property, lesson 7: estimate products, lesson 8: multiply by one-digit numbers, lesson 9: multiply by two-digit numbers, chapter 3: divide by a one-digit divisor, lesson 1: relate division to multiplication, lesson 2: hands on: division models, lesson 3: two-digit dividends, lesson 4: division patterns, lesson 5: estimate quotients, lesson 6: hands on: division models with greater numbers, lesson 7: hands on: distributive property and partial quotients, lesson 8: divide three- and four-digit dividends, lesson 9: place the first digit, lesson 10: quotients with zeros, lesson 11: hands on: use models to interpret the remainder, lesson 12: interpret the remainder, chapter 4: divide by a two-digit divisor, lesson 1: estimate quotients, lesson 2: hands on: divide using base-ten blocks, lesson 3: divide by a two-digit divisor, lesson 4: adjust quotients, lesson 5: divide greater numbers, chapter 5: add and subtract decimals, lesson 1: round decimals, lesson 2: estimate sums and differences, lesson 3: hands on: add decimals using base-ten blocks, lesson 4: hands on: add decimals using models, lesson 5: add decimals, lesson 6: addition properties, lesson 7: hands on: subtract decimals using base-ten blocks, lesson 8: hands on: subtract decimals using models, lesson 9: subtract decimals, chapter 6: multiply and divide decimals, lesson 1: estimate products of whole numbers and decimals, lesson 2: hands on: use models to multiply, lesson 3: multiply decimals by whole numbers, lesson 4: hands on: use models to multiply decimals, lesson 5: multiply decimals, lesson 6: multiply decimals by powers of ten, lesson 7: multiplication properties, lesson 8: estimate quotients of decimals, lesson 9: hands on: divide decimals, lesson 10: divide decimals by whole numbers, lesson 11: hands on: use models to divide decimals, lesson 12: divide decimals, lesson 13: divide decimals by powers of ten, chapter 7: expressions and patterns, lesson 1: hands on: numerical expressions, lesson 2: order of operations, lesson 3: write numerical expressions, lesson 4: hands on: generate patterns, lesson 5: patterns, lesson 6: ordered pairs, lesson 7: graph patterns.

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