SKU: 2079364230

Singapore Math Dimensions Math Workbook 8B

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Description

Singapore Math Dimensions Math Workbook 8BWorkbooks are the essential supplements to textbooks as they give students the opportunity to practice applying new concepts. Workbook exercises polish analytical skills and help students develop a stronger foundation in math through repetition and variation. Features & Components: Basic Practice: Simple questions that drill comprehension of concepts. Further Practice: More difficult questions that involve direct application. Challenging Practice:

Workbooks are the essential supplements to textbooks as they give students the opportunity to practice applying new concepts. Workbook exercises polish analytical skills and help students develop a stronger foundation in math through repetition and variation.

Features & Components:

  • Basic Practice: Simple questions that drill comprehension of concepts.
  • Further Practice: More difficult questions that involve direct application.
  • Challenging Practice: Questions that require synthesis.
  • Enrichment: Questions that demand higher order thinking, analysis, and reasoning.


The answer key at the back of the book provides answers only. Worked Solutions (sold separately) contain fully worked solutions.

Note: Two workbooks (A and B) correspond to the two halves of the school year. Soft cover.

Dimensions Math® Workbook 8B

Chapter 8: Graphs of Linear and Quadratic Functions

8.1 Linear Function

A. Idea of Functions 
B. Linear Functions
C. Rate of Change

8.2 Graphs of Quadratic Functions

A. Graph of y = ax2 + bx + c, where a > 0 
B. Graph of y = ax2 + bx + c, where a < 0

In a Nutshell 
Review Exercise 8
Extend Your Learning Curve
Write in Your Journal

Chapter 9: Graphs in Practical Situations

9.1 Tables, Charts and Graphs
9.2 Distance-Time Graphs

In a Nutshell 
Review Exercise 9 
Extend Your Learning Curve 
Write in Your Journal

Chapter 10: Pythagorean Theorem

10.1 Pythagorean Theorem 
10.2 The Converse of Pythagorean Theorem

A. Definition 
B. Determination of Right-Angled Triangles

10.3 Applications of Pythagoras Theorem

In a Nutshell 
Review Exercise 10 
Extend Your Learning Curve 
Write in Your Journal 

Chapter 11: Coordinate Geometry

11.1 Distance Between Two Points 
11.2 Slope of a Straight Line 
11.3 Equation of a Straight Line

In a Nutshell 
Review Exercise 11 
Extend Your Learning Curve 
Write in Your Journal

Chapter 12: Mensuration of Pyramids, Cylinders, Cones and Spheres

12.1 Pyramids

A. Introducing Pyramids 
B. Nets and Surface Areas of Pyramids 
C. Volumes of Pyramids

12.2 Cylinders

A. Volume and Surface Area of a Cylinder

12.3 Cones

A. Introducing Cones
B. Net and Surface Area of a Cone 
C. Volume of a Cone

12.4 Spheres

A. Introducing Spheres 
B. Volume of a Sphere 
C. Surface Area of a Sphere

In a Nutshell 
Review Exercise 12 
Extend Your Learning Curve 
Write in Your Journal

Chapter 13: Data Analysis

13.1 Organizing Data in Frequency Tables 
13.2 Bar Graphs and Histograms

A. Bar Graphs 
B. Histograms

13.3 Line Graphs and Scatter Plots

A. Line Graphs 
B. Scatter Plots

In a Nutshell 
Review Exercise 13 
Extend Your Learning Curve 
Write in Your Journal

Chapter 14: More About Quadratic Equations

14.1 Solving Quadratic Equations by Factorization 
14.2 Completing the Square Method 
14.3 Quadratic Formula 
14.4 Graphical Method 
14.5 Applications of Quadratic Equations

In a Nutshell Review Exercise 14 
Extend Your Learning Curve 
Write in Your Journal

Answers 

Click here to view Dimensions Math® Workbook 8B samples. 

 

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SKU: 2079364230

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Verified Purchase
Glenn R. Miller
Massapequa, US
★★★★★ 5
Well-packaged, quality materials, easy to assemble, very comfortable, great customer service
Color: Black Full Mesh, Style: Executive
When I received this package, I was surprised at how small/compact it was--hard to believe a high-back office chair could fit in that box! As I unpacked it, I was impressed by two things: first, how incredibly well it was packaged with an obvious intent to protect the components; second, how solid, heavy-duty, and high-quality those components were. I got the box unpacked and read the instructions. They were simple and easy to understand, and included so many "here's a good tip" notes that it was obvious that a lot of thought and experience had gone into writing them. I found the chair simple to assemble and had it done in less than 15 minutes. The chair was very adjustable. I was able to get the height to exactly what I wanted with no trouble at all. I was also able to adjust the height of the lumbar support, and to adjust how far it extended. There are a lot of adjustments you can make, the instructions lay that out quite thoroughly, too. As a result, the chair was very comfortable and helped me sit with a healthy posture. I bought this chair because I had begun having an ache in my lower back, which I suspected was due to a chair I had been using for over 5 years. Within 3 days, the back pain was gone. I was also very impressed with the customer service. Their manual mentions in multiple places things you can try if you have any issues, and always ends with "call us". Their team reached out to me after a few days to make sure I got the chair assembled with no issues and that it was comfortable. This was all part of the all-around quality of this purchase. I'm very happy with this chair!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
M
Verified Purchase
Marcos Castillo
Waukegan, US
★★★★★ 5
Comparable to Higher-End Chairs, Solid Build and Support Without the Premium Price
Color: Black Full Mesh, Style: Executive, Color: Black Full Mesh, Style: Executive
I’ve been using this chair for a bit now and it’s been a genuinely upgrade. The build quality stands out right away, it has real heft and doesn’t feel cheap or hollow. Everything fits together cleanly and once assembled it feels stable and planted. I’m over 6 ft and 200+ lbs and it handles that without any issue, no creaking or sense that it’s being pushed to its limits. There’s enough space in the seat and back that you don’t feel boxed in. I added an extra ergonomic cushion and it still feels roomy, which isn’t always the case with chairs in this category. The adjustability helps a lot here, especially the lumbar support. Being able to move it up and down and also forward and back makes it easy to actually get it where you need it, instead of just accepting a fixed position. The armrests are also easy to dial in, especially if you’re switching between typing, reading, or leaning back a bit. The tilt range is useful, and the tilt tension is stronger than I expected. Even at my size it takes a bit of effort to lean back, which I see as a positive since it feels controlled and supportive rather than loose or overly easy to recline. The mesh is another strong point. It came in perfect condition, no snags, no loose threads, no rough edges anywhere. There weren’t any bits of untrimmed plastic on the frame either, which says a lot about the quality control. The mesh itself is taut with a bit of bounce, so it doesn’t sag but still has some give, which makes long sitting sessions more comfortable. Assembly was straightforward and clearly thought through. The instructions are easy to follow, but what stood out were the built in redundancies that keep you from second guessing anything. There are multiple left and right indicators when installing the arms, a clear front facing marker for the gas lift, and the screws are labeled in the packaging so you’re not guessing which goes where. It’s one of the smoother assembly experiences I’ve had. I also reached out to activate my warranty and had a very positive experience. I spoke with Alice who was very knowledgeable, quick, warm, and they went out of their way to help me with whatever I needed. When I inquired about the extra screw holes under the chair, she let me know that this was for a foot rest which was still in the production phase and unprompted offered to have one shipped to me when they were ready! There is an excellent team behind the product. Overall: well built chair with good materials, thoughtful design choices, and good adjustability to make it work for different setups. It feels durable, comfortable over longer periods, and especially well suited if you need something that can handle a larger frame without sacrificing support.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
M
Verified Purchase
M. T.
Pawtucket, US
★★★★★ 5
Excellent chair/great support.
Color: Black Full Mesh, Style: Executive
Excellent, comfortable chair! I was surprised at how easy it was to assemble---but the directions were super clear and all the pieces and parts were labeled. Once I received the chair, I was also surprised with the email follow up from Alice at Molents. All this for a reasonably priced chair.
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Reviewed in the United States on April 1, 2026
S
Verified Purchase
SL
Alexandria, US
★★★★★ 4
Great Ergonomic Support and Fit, with Minor Adjustment Caveats
Color: Black Full Mesh, Style: Executive, Color: Black Full Mesh, Style: Executive
As someone who is 5'4" and 140 lbs, the size of the chair feels ideal, and the seat cushion is spacious without feeling overwhelmingly large. The breathable mesh material is high quality, keeping me cool during long working sessions while still feeling sturdy. The back support and adjustable lumbar feature aligns perfectly with my spine and has noticeably reduced my posture fatigue. The height adjustment mechanism operates smoothly to align perfectly with my desk, and the assembly process was surprisingly straightforward, taking less than 20 minutes with clear instructions and tools included. My only slight hesitations are regarding armrests not being long enough. The wheels are not easy to roll on carpet and require a bit of extra effort to move. Maybe a chair mat might be helpful on carpeted floors. However, for the price, the comfort and build are impressive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
J
Verified Purchase
JFH
Alexandria, US
★★★★★ 5
High quality and incredible customer service
Color: Black Full Mesh, Style: Executive
This is an extremely well made chair at a very competitive price. The packaging, assembly instructions, as well as the way the hardware was packaged and labeled is probably the best I've seen. I'm particular about tools, and the included allen wrench was better than the normal "included tools" so much so that i actually used it rather than one of my own. The assembly was easy, and the chair itself looks and feels very high quality, and is very comfortable. Perhaps best of all was the level of customer service. I emailed on a weekend to activate the warranty and request the free cushion they offer. I got a personal response in less than a day and they offered upgraded wheels for free as well. This is a company worth doing business with.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026

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