Sometimes in life, it is acceptable to add or subtract numbers that have been rounded up or down to make calculations easier. In these videos, the Kids Academy teacher explains rounding numbers to the nearest ten and rounding numbers to the nearest hundred.
A real-life example of when rounding numbers is used could be:
A student needs new clothes. Her parents take her shopping and tell her that she can spend $75 on any items she likes. She immediately sees a shirt that costs $19.98. She finds a pair of pants for $27.99 and some shoes for $14.95. Does she have enough money to buy all three items?
Rounding makes the calculations easier. When the numbers are rounded to the nearest 10, they become $20.00, $28.00 and $15.00. Now the numbers are much easier to add and she determines she has enough to buy them all.
The video explains the rounding numbers rules are simple. When you are rounding numbers to the nearest ten, you look to the number to the right in the ones place. If that number is five or higher, you will round up. If the number is four or lower, then you round down. Likewise, if you are rounding numbers to the nearest 100, then look to the number on the right in the tens place. If that number is five or higher, you will round up. If the number is four or lower, then you round down.
The video teacher recommends underlining the number that you are rounding and drawing an arrow to the number to the right that determines whether you round up or down. The video provides several examples of rounding numbers as well as scenarios that require rounding numbers in real-life.
Rounding numbers 3rd grade, is a skill that prepares students to use math in their everyday lives. Teachers find these videos are a great tool that can be used for teaching re-teaching or for enrichment.
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