Sum of rock samples collected by Shawn = (127+65+96) = 288 128 + 179 = 307 Total no of miles he drove on both Saturday and Sunday = 58 + 23 = 81 miles. _____ students. So, the correct answer is option A. 869 Explanation: No of students visited the zoo on Monday and Tuesday than on Wednesday = (246+418) – 349 = 315. The nearest 100’s on both sides of 663 are 600 and 700. Question 3 The correct answer is option A. 420 + 8 = 428, Problem Solving Step 3: 9 + 1 = 10 An airplane flies 617 miles in the morning. So, the correct answer is option A. Spiral Review 278 to the nearest hundred is 300 Odd numbers are in between the even numbers. 325 Question 4 Group the tens to make them easy to add. Now add, 325 + 1 Step 1: 325, 622 nearest to the hundred is 600 And the number nearer to 44 is 45. 356 If you are adding 5 and 7 together the commutative property of addition says that you will get the same answer whether you are adding 5 + 7 or 7 + 5. Thus the correct answer is option C. Question 6 Search this site. Xavier’s older brother has 568 songs on his music player. So, the correct answer is option B. 1. +25 89 10. Now find the sum of the rounded numbers. The number compatible to 32 is 25 So, the correct answer is option B. Sum: 684. Number of books that Mrs. Wang read = 247 Show your work. 1.3 Numbers Through Thousands. Step 1: What is the best estimate of the number of miles the McBrides drove in all during the two days? Likewise, if you subtract 0 from any number, the result will be that number. 68 Jason has 330 pennies. = 21 people. The difference between 615 and 342 is 273 177 The sum of an even and odd number is an odd number. He has 76 of the pins displayed on his wall. Which is the best estimate? 473 = 400 + 70 + 3 The number closer to 512 is 500 How many sweaters were sold in January and February? 829 The number closer to 146 is 100 Step 2: 31 people visited more the museum on Saturday. Therefore the number of pies sold that day = 45 Alex collected about 250 shells. The other bag weighs 15 pounds. He fills one jar with 165 marbles. 152 How many students in all are in the two classes? One skeleton in a museum has 189 bones. Group the tens to make them easy to add. 900 Explain how you can use mental math to find how long Shelley spent on the two tasks. The number closer to 618 is 600, 481+215=■ 350 All students of 7th grade can refer and Download Go Math Answer Key Chapter 12 Experimental Probability. 438 Problem Solving Look at the number in the tens’ place and…. ∴ 11 is an odd number. 26 + 37 + 14 = 77 animals. 40 – 10 862 The tables show the kinds of shells they collected. 645 rounded to the nearest ten is 650. If you are adding ten and eight together, the commutative property of addition says that you will get the same answer whether you are adding 10 + 8 or 8 + 10. This was 158 points more than Ike scored. Richie has 268 pennies. So, the statement Ms. Martin’s class read about 100 more books than Mr. Lopez’s class is true. There are 318 fiction books in the class library. Therefore the estimated difference is 35. For numbers 7a–7d select True or False for each statement. 395 So, the answer is option D. Question 4 Is Jackson correct? 189 = 100 + 80 + 9 27 Ruby has 78 books. Line up the numbers by place value. Option (c) is correct. 500 – 137 = ★ How many students visited the zoo on Wednesday and Thursday? The number close to 192 is 190 and the number close to 78 is 80. 3 + 8 = 11. Answer: 300 2.1 Group Tens as Hundreds. There will be no change in the sum whether you add 9 + 6 or 6 + 9 = 15 Ms. Hinely picked 46 tomatoes from her garden on Friday. For a party, Shaun blew up 36 red balloons, 28 white balloons, and 24 blue balloons. Sta 2018, Grade 7 Interactive ... Go Math! 1 will be carried to tens place. Jonas wrote 9 + 8 = 17. Avery sent 58 email invitations to a party. There are 318 fiction books in the class library. Are you searching for the solutions of 7th grade? So 0 becomes 10. 300 Mark all that apply. How many points did Ike score? Question 12 At one performance, 189 of the seats were empty. Group the tens to make them easy to add. The number closer to 680 is 700. Go Math Grade 7 Answer Key Chapter 3 Rational Numbers consists of step by step explanations which help the students to score good marks in the exams. Therefore the estimated sum of 437 and 146 is 600. Colin read 64 pages in his book. c. (4 + 5) + 7 = (5 + 4) + 7 Round to nearest hundred: (i) Lets round 829 to the nearest 10. Write zeros for the tens and ones digit. 2018, Grade 6 Interactive ... Go Math! Jayce sold 218 cups of lemonade at his lemonade stand.

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