Welcome to H3 Maths

Blog Support for Growing Mathematicians

Posts tagged with weight

Another Numbers Matter

June19

In the news, this time another “numbers matter” from STUFF: “Think of the last time you used a set of scales. Or purchased something that had been weighed or measured before being packaged. Perhaps you’ve taken some medication today. Or bought chia seeds at the supermarket. Put petrol in your car. Posted a parcel. Poured […]

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Another Numbers Matter

Concrete: The material that’s ‘too vast to imagine’

July4

A recent BBC article predicted that, if its rate of growth continues, concrete will overtake the total weight of Earth’s biomass sometime around 2040. Try to picture that in the mind’s eye: there is a day approaching soon when there will be a greater weight of concrete on Earth than every single tree in every forest, every fish […]

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Concrete: The material that’s ‘too vast to imagine’

Galloping Galaxies – Pt III – Mass vs Size

November20

“Size matters!” How often we hear that quote. But does it? Perhaps mass matters too? Jupiter is the largest planet in the solar system. In terms of mass, Jupiter dwarfs the other planets. If you were to gather all the other planets together into a single mass, Jupiter would still be 2.5 times more massive. […]

by posted under Uncategorized | tagged under , , , , , ,  |  Comments Off on Galloping Galaxies – Pt III – Mass vs Size

Student reacts to ‘offensive’ Math question

October13

A 10-year-old schoolgirl has wowed the world with her wisdom after refusing to answer a maths question for the most honourable reason. Rhythm Pacheco was doing her homework when she came across a question that asked her to work out “how much heavier” one female student was from another, news.com.au reports. She pointed out the […]

by posted under Uncategorized | tagged under ,  |  Comments Off on Student reacts to ‘offensive’ Math question

Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

Archives

H3 Viewers



Skip to toolbar