SKU: 48742338857

Math Mammoth Percent

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Description

Math Mammoth PercentMath Mammoth Percent teaches students the concept of percent, percentage of a number, discounts, sales tax, percent of change, circle graphs, and percent of comparison. It is suitable for 6th 8th grades. The concept of percent builds on the students' understanding of fractions and decimals. Specifically, students should be familiar with the idea of finding a fractional part of a whole (such as finding 3 4 of $240). Assuming the student has mastered

Math Mammoth Percent teaches students the concept of percent, percentage of a number, discounts, sales tax, percent of change, circle graphs, and percent of comparison. It is suitable for 6th-8th grades.

The concept of percent builds on the students' understanding of fractions and decimals. Specifically, students should be familiar with the idea of finding a fractional part of a whole (such as finding 3/4 of $240). Assuming the student has mastered that, and can easily convert fractions to decimals, then studying the concept of percent should not be difficult.

The first lesson, Percent, practices the concept of percent as a hundredth part, and how to write fractions and decimals as percentages. Next, we study how to find a percentage when the part and the whole are given (for example, if 15 out of 25 club members are girls, what percentage of them are girls?).

The following two lessons have to do with finding a certain percentage of a given number or quantity. First, we study how to do that using mental math techniques. For example, students find 10% of $400 by dividing $400 by 10. Next, students find a percentage of a quantity using decimal multiplication, including using a calculator. For example, students find 17% of 45 km by multiplying 0.17 _ 45 km.

I prefer teaching students to calculate percentages of quantities using decimals, instead of using percent proportion or some other method. That is because using decimals is simpler: we simply change the percentage into a decimal, and multiply, instead of having to build a proportion or use fractions.

Next is a lesson about discounts, which is an important application in everyday life. Then, we go on to the lesson Practice with Percent, which contrasts the two types of problems students have already studied: questions that ask for a certain percentage of a number (the percentage is given), and questions that ask for the percentage.

The next major topic is the percentage of change. The concept of percentage of change deals with percentage increases and decreases in quantities (especially prices). Tying in with percentage of change, there is one lesson on Comparing Values Using Percentages.

Simple Interest is a lesson on the important topic of interest, using as a context both loans and savings accounts. Students learn to use the formula I = prt in a great variety of problems and situations.

The text concludes with a thorough review lesson of all of the concepts taught in the other lessons.

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SKU: 48742338857

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4.5 ★★★★★
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Briana C.
Fort Morgan, US
★★★★★ 4
Nice quality, shape not for me
Fit Type: Oversized, Size: Medium, Color: Medium Blue Vintage
This was just too boxy for my body. Material was nice, quality jean material. Color was true to image. It was a little stiff but as you would expect with nice, new and unwashed denim.
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Reviewed in the United States on May 31, 2026
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M1so
Charlottesville, US
★★★★★ 5
Solid basic good denim jacket
Fit Type: Regular, Size: X-Large, Color: Authentic Medium Wash
In direct comparison to Levi’s women’s trucker denim jacket, this one is: slightly heavier denim, less stretchy, less fitted. I kept this one and returned the Levi’s because I wanted the roomier fit. I wish it was a little longer in the body: I’m tall, and it isn’t too short but I’d like a little more length. It feels slightly longer than the Levi’s. I wish the sleeves were longer too. They are probably just right for an average height or shorter person. The armholes could be smaller. The medium wash is a nice medium blue, fairly even in tone. It doesn’t have a lot of stretch but it’s comfortable. The denim is substantial but not too stiff. Overall, it’s a standard good quality denim jacket without any peculiar style elements or weird cut. It’s good!
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Reviewed in the United States on April 3, 2026
M
Verified Purchase
Maryland Marcy
Carnegie, US
★★★★★ 3
Fabric way to heavy.
Fit Type: Regular, Size: Medium, Color: White
Cute, but material is WAY to heavy, like the heaviest duty denim I've ever seen. Wanted this to be a cute coverup. If you're needing something while breaking broncos or riding your motorcycle would probably be great. I kept it for a while because it was good quality and well made, but it ended up in the donation pile as I'd never wear this.
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Reviewed in the United States on June 10, 2026
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Clare Lukes
Whiting, US
★★★★★ 5
Awesome jacket
Fit Type: Regular, Size: Medium, Color: Stone Dark Wash
Love it so not too long or too short but just right and the color is out of sight and fits awesome
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Reviewed in the United States on June 12, 2026
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M
New York, US
★★★★★ 5
Old school denim — not stretchy
Fit Type: Regular, Size: X-Small, Color: Authentic Medium Wash
Fabric used is old school denim — not the thin, stretchy stuff that pretty much everything called “denim” is today. It is 99% cotton (20% of which is recycled cotton) and 1% elastane, but I can’t feel any stretch in the fabric. It is a substantial, non-stretchy denim that gives the jacket really good structure. It has a higher end fit and look than the price would suggest. I wanted a more fitted denim jacket so ordered an XS even though according to the size chart I need a small. (I have a 34.5” bust, 28” waist at 118 pounds 5’4”.) It still buttons over a t shirt or lightweight sweater with freedom for movement/without being tight, but if I wanted a roomy fit or the ability to wear a heavier sweater or sweatshirt underneath and still be able to comfortably button it I would have needed a small. The shoulders are cut broad — I have very broad shoulders and the XS surprisingly fits my shoulders well. This jacket may not be the greatest fit for you if you have very narrow shoulders, unless you are going for an oversized look.
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Reviewed in the United States on May 17, 2026

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