5.OA.A.2

5.OA.2. Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.

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Ages: 11 - 15
6573 Views:
Add and Subtract Multiple Integers
From YouTube, produced by MuchoMath, Lawrence Perez, Candice Jhu
This video is a step-by-step lesson about addition and subtraction of multiple integer numbers. The video explains working left to right. The narrator uses humor and it is an easy video to follow.  (08:47)
Found by Anonymous in 5.OA.A.2
April 1, 2009 at 04:22 PM
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Not Right For WatchKnowLearn
Ages: 11 - 15
2498 Views:
Word Problems: Writing Numerical Expressions
From YouTube, produced by AIMS Education Foundation
The goal of this lesson is to translate each situation in the word problem into a mathematical expression in the sequence it is written, then add parentheses to make sure the order of operations is followed. Problem: The class treasurer orders suppli... [more]
Found by wendyofoz in 5.OA.A.2
November 10, 2012 at 11:51 PM
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Not Right For WatchKnowLearn
Ages: 10 - 15
1049 Views:
Word Problems: Writing Numerical Expressions 2
From YouTube, produced by AIMS Education Foundation
Learn to write a numerical expression with parentheses to represent an everyday situation. Problem: A fast food meal contains a $1.75 hamburger, $1.45 fries, and a $1.35 drink. How much does the coach need to pay for the seven players on the team? (2... [more]
Found by wendyofoz in 5.OA.A.2
November 10, 2012 at 11:56 PM
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Not Right For WatchKnowLearn
Ages: 9 - 13
834 Views:
Evaluating Numerical Expressions
From YouTube, produced by AlgebraClassNotes.com
Mr. McClure shows several example problems of how to write numerical expressions from written expressions. Examples include: 8 more than 9, the product of 6 and 6, and half of 16. (4:08)
Found by wendyofoz in 5.OA.A.2
November 11, 2012 at 11:20 PM
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Not Right For WatchKnowLearn
Ages: 10 - 15
770 Views:
Word Problems: Writing Numerical Expressions 3
From YouTube, produced by AIMS Education Foundation
Write a numerical expression with parentheses to represent an everyday situation. Problem: The first two rows of a band have seven drummers each. The rest of the band marches in seven rows with five instruments in each row. Adding two more for the dr... [more]
Found by wendyofoz in 5.OA.A.2
November 10, 2012 at 11:59 PM
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Not Right For WatchKnowLearn
Ages: 10 - 15
660 Views:
Writing Numerical Expressions 5
From YouTube, produced by AIMS Education Foundation
Using a word problem, learn to write a numerical expression to represent an everyday situation.  Problem: For a family movie night, a father buys two adult tickets that cost $10.00 each, plus three children's tickets at $7.50 each. How much does a ni... [more]
Found by wendyofoz in 5.OA.A.2
November 11, 2012 at 11:02 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
582 Views:
Evaluating Expressions with Parentheses
From YouTube, produced by KFreimuth83
This Screencast was completed using Dabbleboard and shows how changing, removing, or eliminating parentheses with similar numbers can change the outcome. The instructor reviews the order of operations as she works the same problem, in two different w... [more]
Found by wendyofoz in 5.OA.A.2
November 9, 2012 at 11:45 PM
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Not Right For WatchKnowLearn
Ages: 9 - 14
501 Views:
Writing Numerical Expressions 6
From YouTube, produced by AIMS Education Foundation
In this word problem, learn to write a numerical expression that represents an everyday situation. Problem: The receipt showed the purchase of a $24 DVD plus three CDs for $12 each. A tax of $3 was added. What is the total of the bill? (1:20)
Found by wendyofoz in 5.OA.A.2
November 11, 2012 at 11:11 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
413 Views:
Writing Numerical Expressions 8
From YouTube, produced by AIMS Education Foundation
In this word problem, learn to write a numerical expression that represents an everyday situation. Problem: A group of three 4-cm high blocks are stacked on top of a pair of 6-cm high blocks with an 8-cm cone completing the stack of six blocks. How t... [more]
Found by wendyofoz in 5.OA.A.2
November 11, 2012 at 11:09 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
375 Views:
Writing Numerical Expressions 7
From YouTube, produced by AIMS Education Foundation
In this video, learn to write a numerical expression to represent an everyday situation. Problem: How much does an order cost that includes three tops for $14.50 each, 2 pairs of shorts for $26.00 each, plus $4.00 for shipping? (1:47)
Found by wendyofoz in 5.OA.A.2
November 11, 2012 at 11:06 PM
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