go math grade 5 lesson 1.9 homework

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Go Math! 5 Student Edition, Grade: 5 Publisher: Houghton Mifflin Harcourt

Go math 5 student edition, title : go math 5 student edition, publisher : houghton mifflin harcourt, isbn : 547352042, isbn-13 : 9780547352046, use the table below to find videos, mobile apps, worksheets and lessons that supplement go math 5 student edition., textbook resources.

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Texas Go Math Grade 5 Lesson 3.6 Answer Key Decimal Multiplication

Refer to our Texas Go Math Grade 5 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 5 Lesson 3.6 Answer Key Decimal Multiplication.

Investigate

Materials; color pencils

The distance from Charlene’s house to her school is 0.8 mile. Charlene rides her bike 7 tenths of the distance and walks the rest of the way. How far does Charlene ride her bike to school?

B. Using a color pencil, shade columns on the grid to represent the distance to Charlene’s school. The distance to the school is 0.8 mile. How many columns did you shade?____8______

C. Divide the square into 10 equal rows. What decimal value does each row represent? ___0.1_______

D. Using a different color, shade rows that overlap the shaded columns to represent the distance to school that Charlene rides her bike.

• What part of the distance to school does Charlene ride her bike? _____0.56_____
• How many rows of the shaded columns did you shade? _____7_____

E. Count the number of squares that you shaded twice. There are _____56_____ squares. Each square represents ____0.01______. Record the value of the squares as the product. 0.7 × 0.8 = ___0.56_______

Explanation: A. Drawn a square with 10 equal columns as shown above, The decimal value does each column represent is 0.1, B. Using a color pencil, shade columns on the grid to represent the distance to Charlene’s school, The distance to the school is 0.8 mile, So columns shaded are 8, C. Divided the square into 10 equal rows, The decimal value does each row represent is 0.1, D. Using a different color, shade rows that overlap the shaded columns to represent the distance to school that Charlene rides her bike.

• The distance to school does Charlene ride her bike 0.56,
• Number of rows of the shaded columns did he shade is 7.

Make Connections

You can use decimal squares to multiply decimals greater than 1.

Multiply. 0.3 × 1.4 STEP 1: Shade columns to represent 1.4. How many tenths are in 1.4?

STEP 2: Shade rows that overlap the shaded columns to represent 0.3. How many rows of the shaded columns did you shade? _____0.42_______

Explanation: Multiplying 0.3 × 1.4 STEP 1: Shaded columns to represent 1.4,

STEP 2: Shaded rows that overlap the shaded columns to represent 0.3, Therefore rows of the shaded columns shaded are 0.42.

Math Talk Mathematical Processes

Explain why the product is less than only one of the decimal factors. Answer: We are finding a fractional amount of a quantity,

Explanation: When multiplying a number by a decimal less than one, the product will be smaller than the number being multiplied. This is because we are finding a fractional amount of a quantity. For example, 0.1 x 0.8 = 0.08, because the question is asking us to find one tenth of eight tenths.

Share and Show . Multiply. Use the decimal model.

Explanation: Multiplying 0.8 × 0.4 STEP 1: Shaded columns represent 0.8,

STEP 2: Shaded rows that overlap the shaded columns to represent 0.4, Therefore rows of the shaded columns are 0.32.

Explanation: Multiplying 0.1 × 0.7 STEP 1: Shaded columns represents 0.1,

STEP 2: Shaded rows that overlap the shaded columns to represent 0.7, Therefore rows of the shaded columns shaded are 0.32.

Explanation: Multiplying 0.4 × 1.6 STEP 1: Shaded columns represent 0.4,

STEP 2: Shaded rows that overlap the shaded columns to represent 1.6, Therefore rows of the shaded columns are 0.64.

Problem-Solving

Sense or Nonsense?

Explanation: Given Randy and Stacy used area models to find 0.3 of 0.5. Both Randy’s and Stacy’s models are shown above, Randy’s model makes sense which matches with 0.5, Stacy’s model is nosense as it doesnot match with 0.3. the correct answer is 0.3 X 0.5 = 0.15.

Explanation: Given a large bottle contains 1.2 liters of olive oil, A medium-sized bottle has 0.6 times the amount of olive oil as the large bottle, therefore medium-sized bottle contains 1.2 liters X 0.6 = 0.72 liters, Now more olive oil does the large bottle contain than the medium-sized bottle is 1.2 liters – 0.72 liters = 0.48 liters.

Daily Assessment Task

Fill in the bubble completely to show your answer.

Explanation: Given Farmer Green grows 0.9 tons of grain each year. Seven-tenths of the grain grown is barley, So farmer grows each year is 0.9 X 100 = 90 grains and seven-tenth is 90 X 7÷ 10 = 63, the model showing the amount of barley grown each year is 63 matches with (A).

Explanation: Given the multiplication problem modeled by the diagram as frame 1- 10 X 10 = 100 ÷ 100 = 1, and frame 2 as 1 X 10 ÷ 100 = 0.1, therefore result in matches with (C) 1.1 × 0.3 = 0.3.

Question 8. Multi-Step An outdoor swimming race is 1.6 miles long. Simon swims 8 tenths of the course and his friend Sheila swims 9 tenths of the course. How much farther did Sheila swim? (A) 0.16 mile (B) 0.72 mile (C) 0.1 mile (D) 0.2 mile Answer: (C) 0.1 mile,

Explanation: Given an outdoor swimming race is 1.6 miles long, Simon swims 8 tenths of the course means 8÷ 10 = 0.8 and his friendSheila swims 9 tenths of the course so 9 ÷ 10 = 0.9, So much farther did Sheila swims is 0.9 – 0.8 = 0.1 which matches with (C).

Texas Test Prep

Question 9. Alex is 1.3 meters tall. His brother, Raul, is 0.6 times as tall as Alex. How tall is Raul? (A) 1.9 meters (B) 0.7 meter (C) 0.78 meter (D) 7.8 meters Answer: (C) 0.78 meter,

Explanation: Given Alex is 1.3 meters tall. His brother Raul is 0.6 times as tall as Alex. Therefore Raul is 1.3 X 0.6 = 0.78 meters matches with (C).

Texas Go Math Grade 5 Lesson 3.6 Homework and Practice Answer Key

Multiply. Use the decimal model.

STEP 2: Shaded rows that overlap the shaded columns to represent 0.7, Therefore rows of the shaded columns shaded are 0.54.

Explanation: Multiplying 0.5 × 1.7 STEP 1: Shaded columns represents 0.5,

STEP 2: Shaded rows that overlap the shaded columns to represent 1.7, Therefore rows of the shaded columns shaded are 0.85.

STEP 2: Shaded rows that overlap the shaded columns to represent 0.8, Therefore rows of the shaded columns shaded are 0.16.

STEP 2: Shaded rows that overlap the shaded columns to represent 0.7, Therefore rows of the shaded columns are 0.21.

STEP 2: Shaded rows that overlap the shaded columns to represent 1.2, Therefore rows of the shaded columns shaded are 0.84.

Explanation: Multiplying 0.4 × 0.6 STEP 1: Shaded columns represents 0.4,

STEP 2: Shaded rows that overlap the shaded columns to represent 0.6, Therefore rows of the shaded columns shaded are 0.24.

Explanation: Multiplying 0.8 × 0.8 STEP 1: Shaded columns represents 0.8,

STEP 2: Shaded rows that overlap the shaded columns to represent 0.8, Therefore rows of the shaded columns shaded are 0.64.

Explanation: Multiplying 0.4 × 1.9 STEP 1: Shaded columns represent 0.4,

STEP 2: Shaded rows that overlap the shaded columns to represent 1.9, Therefore rows of the shaded columns are 0.76.

Explanation: Multiplying 0.9 × 0.7 STEP 1: Shaded columns represents 0.9,

STEP 2: Shaded rows that overlap the shaded columns to represent 0.7, Therefore rows of the shaded columns shaded are 0.63.

Problem Solving

Explanation: Given Vanesh uses 1.6 gallons of paint for his bedroom walls. For his study, he uses 0.7 times the amount of paint as he uses for his bedroom is 1.6 X 0.7 = 1.12 gallons of paint Vanesh used to paint his study.

Lesson Check

Question 12. Alex’s tablet computer weighs 1.5 pounds. The weight of his calculator is 0.6 times the weight of his tablet computer. What is the weight of Alex’s calculator? (A) 2.1 pounds (B) 1.56 pounds (C) 0.3 pound (D) 0.9 pound Answer: (D) 0.9 pound,

Explanation: Given Alex’s tablet computer weighs 1.5 pounds. The weight of his calculator is 0.6 times the weight of his tablet computer. So the weight of Alex’s calculator is 1.5 pounds X 0.6 = 0.9 pound matches with (D).

Explanation: Given model above is 0.1 X 0.1 = 0.01, So each block is 0.1 and we have 7 blocks like that 0.1 X 0.7 = 0.07 which matches with 0.07.

Question 14. Sasha’s hundredths decimal model shows the product 0.72. If she shaded 9 columns, what factor represents the shaded rows? (A) 0.6 (B) 0.9 (C) 0.7 (D) 0.8 Answer: (D) 0.8,

Explanation: Given Sasha’s hundredths decimal model shows the product 0.72. If she shaded 9 columns factor represents the shaded rowsis 0.72 ÷ 0.9 = 0.8 matches with (D).

Question 15. The postman delivers a package and an envelope to Mr. O’Connor. The package weighs 1.8 pounds. The envelope is 0.8 times the weight of the package. What is the weight of the envelope? (A) 1.44 pounds (B) 1 pound (C) 1.16 pounds (D) 1.64 pounds Answer: (A) 1.44 pounds,

Explanation: Given the postman delivers a package and an envelope to Mr. O’Connor. The package weighs 1.8 pounds. The envelope is 0.8 times the weight of the package. The weight of the envelope is 1.8 pounds X 0.8 = 1.44 pounds matches with (A).

Question 16. Multi-Step Carter solves 0.5 × 0.5. Liam solves 0.4 × 1.4. How much greater is Liam’s product than Carter’s product? (A) 0.31 (B) 0.56 (C) 0.25 (D) 0.81 Answer: (A) 0.31,

Explanation: Given Carter solved 0.5 X 0.5 as = 0.25 and Liam solved greater as 0.4 X 1.4 = 0.56, Greater is Liam’s product than Carter’s product is 0.56 – 0.25 = 0.31 matches with (A).

Question 17. Multi-Step Jessica makes punch for her party. She uses 1.6 liters of orange juice. The amount of cranberry juice she uses is 0.5 times the amount of orange juice, and the amount of apple juice is 0.5 times the amount of cranberry juice. What is the total amount of juice in Jessica’s punch? (A) 2.6 liters (B) 2.65 liters (C) 2.8 liters (D) 1.8 liters Answer: (C) 2.8 liters,

Explanation: Given Jessica makes punch for her party. She uses 1.6 liters of orange juice. The amount of cranberry juice she uses is 0.5 times the amount of orange juice, So cranberry juice Jessica makes is 1.6 liters X 0.5 = 0.8 liter + 1.6 liters = 2.4 liters and the amount of apple juice is 0.5 times the amount of cranberry juice, So the amount of apple juice is 0.8 liter X 0.5 = 0.4 liter + 2.4 liters = 2.8 liters of cranberry juice is the total amount of juice in Jessica’s punch.

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