Solving problems involving place value and rounding

Solving problems involving place value and rounding

Lesson details

Key learning points

  1. In this lesson, we will be applying our knowledge of place value and rounding to different problems using these strategies.

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5 Questions

Q1.
What is 563 201 rounded to the nearest multiple of 10 000?
500 000
Correct answer: 560 000
563 000
563 200
Q2.
What is the range of numbers that will round to 400 000 when rounding to the nearest multiple of 100 000?
300 000 - 399 999
Correct answer: 350 000 - 449 999
350 000 - 450 000
400 000 - 499 999
Q3.
What is the range of numbers that will round to 670 000 when rounding to the nearest multiple of 10 000?
Correct answer: 665 000 - 674 999
669 000 - 674 000
669 000 - 674 999
670 000 - 674 999
Q4.
4. I am thinking of a 6 digit number. When rounded to the nearest multiple of 100 000, it is approximately equal to 800 000. It is an even number. What could my number be?
Correct answer: 762 488
789 145
83 000
856 012
Q5.
5. I am thinking of a 5 digit number. When rounded to the nearest multiple of 1000, it is approximately equal to 45 000. It is also a multiple of 5. What could my number be?
44 250
Correct answer: 45 145
45 238
45 891

5 Questions

Q1.
What is the value of the digit '6' in the number 65 341?
Correct answer: 60 000
600
600 000
6000
Q2.
2. I'm thinking of a number. It is a 6 digit, even number. When rounded to the nearest multiple of 100 000, it is approximately equal to 600 000. My number has a '4' in the tens column. What could my number be?
587 241
598 433
61 024
Correct answer: 623 442
Q3.
Which of the following demonstrates an accurate way of partitioning the number 43 213?
40 000 + 30 000 + 2000 + 10 + 3
40 000 + 3000 + 200 + 10
Correct answer: 40 000 + 3000 + 200 + 10 + 3
400 000 + 20 000 + 2000 + 100 + 13
Q4.
Which of the following demonstrates an accurate way of partitioning the number 139 672?
10 000 + 39 000 + 600 + 70 + 2
Correct answer: 100 000 + 39 000 + 600 + 72
100 000 + 672
130 000 + 90 000 + 672
Q5.
There are 652 987 people at an Olympics event on Saturday and 232 018 people at the event on Sunday. Use rounding to the nearest 100 000 to find the approximate total number of people attending over the weekend.
600 000 + 200 000 = 800 000
650 000 + 230 000 = 880 000
Correct answer: 700 000 + 200 000 = 900 000
700 000 + 300 000 = 1 000 000

Lesson appears in

UnitMaths / Reasoning with large whole numbers