lesson 1 homework helper 2.1

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Eureka Math Grade 5 Module 2 Lesson 1 Answer Key

Engage ny eureka math 5th grade module 2 lesson 1 answer key, eureka math grade 5 module 2 lesson 1 problem set answer key.

Question 1. Fill in the blanks using your knowledge of place value units and basic facts. a. 23 × 20 Think: 23 ones × 2 tens = _____46_____ tens 23 × 20 = ____460______

Answer: 23 x 20 = 460.

Explanation: In the above-given question, given that, 23 ones x 2 tens = 46 tens. 23 x 20 = 460.

b. 230 × 20 Think: 23 tens × 2 tens = ____46 tens______ 230 × 20 = ____4600______

Answer: 230 x 20 = 4600.

Explanation: In the above-given question, given that, 23 tens x 2 tens = 46 tens. 230 x 20 = 4600.

c. 41 × 4 41 ones × 4 ones = 164 ___ones_______ 41 × 4 = ____164______

Answer: 41 x 4 = 164.

Explanation: In the above-given question, given that, 41 ones x 4 ones = 164 ones. 41 x 4 = 164.

d. 410 × 400 41 tens × 4 hundreds = 164 ___tens_______ 410 × 400 = _____161000_____

Answer: 410 x 400 = 16100.

Explanation: In the above-given question, given that, 41 tens x 4 hundreds = 164 tens. 410 x 400 = 16100.

e. 3,310 × 300 ___3310___ tens × ___3___ hundreds = 993 ______ 3,310 × 300 = __993________

Answer: 3310 x 300 = 993.

Explanation: In the above-given question, given that, 3310 tens x 3 tens = 993 tens. 3310 x 300 = 993.

f. 500 × 600 ___5___ hundreds × __6___ hundreds = 30 _____ 500 × 600 = ____3000______

Answer: 500 x 6000 = 3000.

Explanation: In the above-given question, given that, 5 hundred x 6 hundred = 30 hundred. 500 x 600 = 3000.

Question 2. Determine if these equations are true or false. Defend your answer using your knowledge of place value and the commutative, associative, and/or distributive properties. a. 6 tens = 2 tens × 3 tens

b. 44 × 20 × 10 = 440 × 2

c. 86 ones × 90 hundreds = 86 ones × 900 tens

d. 64 × 8 × 100 = 640 × 8 × 10

e. 57 × 2 × 10 × 10 × 10 = 570 × 2 × 10

Answer: a. True. b. false. c. True. d. true. e. false.

Explanation: In the above-given question, given that, a. 6 tens = 2 tens × 3 tens 6 tens = 6 tens. b. 44 × 20 × 10 = 440 × 2 44 x 10 = 440 x 20 = 880. c. 86 ones × 90 hundreds = 86 ones × 900 tens 86 x 900 = 86 x 900. d. 64 × 8 × 100 = 640 × 8 × 10 64 x 10 = 640 x 8 . 640 x 8 x 10. e. 57 × 2 × 10 × 10 × 10 = 570 × 2 × 10 57 x 20 x 10  x 10 = 570 x 20. 570 x 20 x 10 = 640.

Answer: 450 x 300 = 135000.

Explanation: In the above-given question, given that, 45 x 3 = 45 x 30. = 12 x 10 = 120. 450 x 30 = (45×10) (3 x 10) = 45 x 3 x 10 x 10 = 450 x 30 = 13500.

Answer: 400 x 5000 = 20,000.

Answer: 80 x 100 = 8000.

Explanation: In the above-given question, given that, 80 x 100 = 8000. 8 x 1000 = 8000.

Question 5. The Canadian side of Niagara Falls has a flow rate of 600,000 gallons per second. How many gallons of water flow over the falls in 1 minute?

Answer: The gallons of water flow over the falls in 1 minute = 3,60,00,000.

Explanation: In the above-given question, given that, The Canadian side of Niagara falls has a flow rate of 600,000 gallons per second. 1 minute = 60 seconds. 600,000 x 60. 3,60,00,000.

Question 6. Tickets to a baseball game are $20 for an adult and $15 for a student. A school buys tickets for 45 adults and 600 students. How much money will the school spend for the tickets?

Answer: The money school spend for the tickets = 9900$.

Explanation: In the above-given question, given that, Tickets to a baseball game are $20 for an adult and $15 for a student. A school buys tickets for 45 adults and 600 students. 45 x $20 + 600 x $15. 900 + 9000. 9900.

Eureka Math Grade 5 Module 2 Lesson 1 Exit Ticket Answer Key

Question 1. Find the products. a. 1,900 × 20

Answer: 1900 x 20 = 38,000.

Explanation: In the above-given question, given that, 1900 x 20. 38000.

b. 6,000 × 50

Answer: 6000 x 50 = 30000.

Explanation: In the above-given question, given that, 6000 x 50. 30000.

c. 250 × 300

Answer: 250 x 300 = 75000.

Explanation: In the above-given question, given that, 250 x 300. 75000.

Question 2. Explain how knowing 50 × 4 = 200 helps you find 500 × 400.

Answer: 50 x 4 = 200.

Explanation: In the above-given question, given that, 50 x 4. 200.

Eureka Math Grade 5 Module 2 Lesson 1 Homework Answer Key

Question 1. Fill in the blanks using your knowledge of place value units and basic facts. a. 43 × 30 Think: 43 ones × 3 tens = _____129_____ tens 43 × 30 = ___1290_______

Answer: 43 x 30 = 1290.

Explanation: In the above-given question, given that, 43 ones x 3 tens = 129 tens. 43 x 30 = 1290.

b. 430 × 30 Think: 43 tens × 3 tens = ____129______ hundreds 430 × 30 = ____1290______

Answer: 430 x 30 = 1290.

Explanation: In the above-given question, given that, 43 tens x 3 tens = 129 hundreds. 430 x 30 = 1290.

c. 830 × 20 Think: 83 tens × 2 tens = 166 ____tens______ 830 × 20 = ____16600______

Answer: 830 x 20 = 16600.

Explanation: In the above-given question, given that, 83 tens x 2 tens = 166 tens. 830 x 20 = 1660.

d. 4,400 × 400 ______440____ hundreds × _____40_____ hundreds = 176 ____hundreds______ 4,400 × 400 = _____176000_____

Answer: 4400 x 400 = 176000.

Explanation: In the above-given question, given that, 440 hundred x 40 hundred = 176 hundredss. 4400 x 400= 176000.

e. 80 × 5,000 ____8______ tens × ____5______ thousands = 40 _____thousands_____ 80 × 5,000 = ____40000______

Answer: 80 x 5000 = 40000.

Explanation: In the above-given question, given that, 8 tens x 5 thousand = 40 thousand. 80 x 5000 = 40000.

Question 2. Determine if these equations are true or false. Defend your answer using your knowledge of place value and the commutative, associative, and/or distributive properties. a. 35 hundreds = 5 tens × 7 tens

Answer: 35 hundreds = 5 tens x 7 tens. Explanation: In the above-given question, given that, 5 tens x 7 tens = 35 hundreds. 5 x 7 = 35.

b. 770 × 6 = 77 × 6 × 100

Answer: 770 x 6 = 77 x 6 x 100.

Explanation: In the above-given question, given that, 770 x 6 = 77 x 100 x 6. 4620 = 46200.

c. 50 tens × 4 hundreds = 40 tens × 5 hundreds

Answer: 50 tens x 4 hundreds = 40 tens x 5 hundreds.

Explanation: In the above-given question, given that, 50 tens x 4 hundreds = 40 tens x 5 hundreds. 200 = 200.

d. 24 × 10 × 90 = 90 × 2,400

Answer: 24 x 10 x 90 = 90 x 2400.

Explanation: In the above-given question, given that, 24 x 10 x 90 = 90 x 2400. 240 x 90 = 21600. 90 x 2400 = 216000.

Answer: b. 80 x 5  = 80 x 50 = 40 x 10 = 400. 800 x 500 = (8 x 100) x (5 x 100) = (8 x 5) x 1000 = 40000. 8000 x 50 = (8 x 5) x (100 x 1000) = 400000.

Explanation: In the above-given question, given that, 80 x 5  = 80 x 50 = 40 x 10 = 400. 800 x 500 = (8 x 100) x (5 x 100) = (8 x 5) x 1000 = 40000. 8000 x 50 = (8 x 5) x (100 x 1000) = 400000.

Answer: d. 673 x 3  = 6730 x 30 = 2019 x 100 = 20190. 6730 x 300 = (673 x 100) x (3 x 100) = (673 x 3) x 1000 = 201900. 63700 x 3000 = (6730 x 1000) x (637 x 10000) = 2019000.

Question 4. A concrete stepping-stone measures 20 square inches. What is the area of 30 such stones?

Answer: The area of 30 such stones = 600 sq inches.

Explanation: In the above-given question, given that, A concrete stepping-stone measures 20 square inches. 20 x 30 = 600.

Question 5. A number is 42,300 when multiplied by 10. Find the product of this number and 500.

Answer: 4230 x 10 = 42300.

Explanation: In the above-given question, given that, A number is 42,300 when multiplied by 10. 500 = 50 x 10. 50 x 10 = 500.

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