Finding Percents Mentally (Guided Notes)
Eddie McCarthy
1.2k Followers
Grade Levels
6th - 9th
Subjects
Resource Type
Standards
CCSS6.RP.A.3c
CCSS7.RP.A.3
Formats Included
- Word Document File
Pages
2 pages
Eddie McCarthy
1.2k Followers
What educators are saying
I showed my students a few videos and then followed up with these notes. They are perfect because they build from finding 10% to multiples of 10% to using our knowledge of 10% to find the in-betweens - 25%, 35%, 45%. Great resource!
I loved the progression of this resource; it really helped students use estimation and simple calculations rather than just jumping to a calculator formula each time. I will definitely use this again!
Description
This lesson is meant to be used as guided notes for a whole class. Students start off by learning how to find 10% of a number, and they use this to find 20%, 30%, 40%, and other multiples of 10%. After noticing that 50% is half of a number and 25% is a fourth, they then learn how to find 5% of a number. This allows them to find 35%, 45%, etc. Finally, students do some real world math by estimating percents of numbers and approximating a couple tips at a restaurant.
The last 2 pages are a copy of the key.
Total Pages
2 pages
Answer Key
Included
Teaching Duration
45 minutes
Last updated Oct 8th, 2012
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Standards
to see state-specific standards (only available in the US).
CCSS6.RP.A.3c
Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.
CCSS7.RP.A.3
Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.
Reviews
Questions & Answers
1.2k Followers
