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Rounding is used to simplify numbers. When rounding we are creating numbers that are approximate to their original value. The benefit to rounding is that it gives us numbers that are easier to work with. The downside to rounding is that the numbers will not always be exact. Example 1: We use rounding in our everyday lives.
When rounding to decimal places we round to a certain position after the decimal point. Let's take the number 6546.54654 as an example. We will round it to: d.p.: 6546.5. d.p.: 6546.55. Tomasz Lechowski. Batory IB SL. September 5, 2019 4 / 13.
When rounding to the nearest 10 look at the units digit, when rounding to the nearest 100 look at the tens digit and when rounding to the nearest 1000 look at the hundreds digit, so 8364 rounds down to 8000.
EXAMPLES OF ROUNDING “EASY” METHOD 1: IF THE NUMBER TO THE. RIGHT OF THE NUMBER TO BE ROUNDED IS 4 OR BELOW, DROP THOSE NUMBERS AND KEEP THE LAST DIGIT THE SAME. IF THE NUMBER TO THE RIGHT OF THE NUMBER TO ROUNDED IS 5 OR ABOVE, ROUND THE LAST DIGIT UP, DROPPING THE NUMBERS AFTER IT.
General rules of rounding are: If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40, or 8.6 is rounded to the nearest whole number is 9 or 3.063 is rounded to 3.1 (to 1 decimal place).
3 maj 2018 · RULES IN ROUNDING OFF WHOLE NUMBERS 1. If the first digit immediately to the right of the round-off place is a. Less than 5, the digit in the round-off place is retained. b. 5 or more, the digit in the round off-place is increased by 1. 2. Digits to the left of the round-off place are retained. 3.
1 paź 2020 · Rounding Multi-Digit Whole Numbers Guided Notes- Teacher Edition Math 4 Copyright © MathTeacherCoach.com 2 What does it mean to round a number? Rounding is when you find the closest “round” number to any given number.
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powiązane z: number rounding rules pdfBring learning to life with worksheets, games, lessons, & more for every grade & subject. Access the most comprehensive library of K-8 resources for learning at school and at home.