Categories
Arithmetic Smart Math

[Smart Math] Arithmetic Problem 27

Here’s and example of a SMART MATH problem for ARITHMETIC.

Arithmetic

Problem

How many integer solutions exists for the equation $latex \left| y-\sqrt{(y+2)^{2}-9} \right|=5$?

  1. 0
  2. 1
  3. 2
  4. 3
  5. 4

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Categories
Multiplication Multiplying with 12 Speed Math

[Speed Math] MULTIPLYING WITH 12

Here’s an example of a SPEED MATH shortcut for MULTIPLYING WITH 12 : (Mul) Nx12 from the MULTIPLICATION category.

Multiplying with 12

When can I use this method?

For multiplying any number with 12.
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pdf Download Practice sheet for  MULTIPLYING WITH 12
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Notes –

  1. There is no real need to add the zero if you can remember to perform same steps for all the digits of the number (including the first and the last).
  2. Make sure to take care of the carryovers as you add the neighboring digits.

 

Related Shortcuts –

Multiplying with 6: (Mul) Nx6

Multiplying with 7: (Mul) Nx7

Multiplying with 11: (Mul) Nx11

Multiplying with 13: (Mul) Nx13

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Categories
Dividing 2-digit Number by 9 Division Speed Math

[Speed Math] DIVIDING 2-DIGIT NUMBER BY 9

Here’s an example of a SPEED MATH shortcut for DIVIDING 2-DIGIT NUMBER BY 9: (Div) Nd9(2d) from the DIVISION category.

Dividing 2-digit Number by 9

When can I use this method?

For dividing any 2-digit number by 9.
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pdf Download Practice sheet for DIVIDING 2-DIGIT NUMBER BY 9
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Notes –

  1. When the sum of the 2 digits is ≥ 9, further divide the sum using this method until you get the sum < 9. Add each Quotient you get along the way to get the final Quotient.
  2. If the sum of the 2 digits is = 9, add 1 to the Quotient and the Remainder becomes 0.


Related Shortcuts –

None


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Categories
Multiplication Multiplying with 999 Speed Math

[Speed Math] MULTIPLYING WITH 999

Here’s an example of a SPEED MATH shortcut for MULTIPLYING WITH 999 : (Mul) Nx999 from the MULTIPLICATION category.

Multiplying with 999

When can I use this method?

For multiplying any number with 999.
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pdf Download Practice sheet for MULTIPLYING WITH 999
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Notes –

  1. The separator should be inserted before the hundred’s (100’s) digit.
  2. The complement of a number is what you need to add to it to make it up to some specified total – in this case 1000.

Related Shortcuts –

Multiplying with 9: (Mul) Nx9
Multiplying with 99: (Mul) Nx99


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Categories
Math Puzzles More Math

[Math Puzzle] 3 Digit numbers with even digits

Puzzule

How many three digit numbers are there in which all the digits are even??
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Categories
Math Puzzles More Math

[Math Puzzle] Largest Number

Puzzule

What is the largest number you can make using numbers 5, 1 , 9 and 2 only once? (Psst…. it’s not that easy… there is a catch)
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Categories
Math Puzzles

[Math Puzzle] Total score of opponent?

Puzzule

A team played 10 games and scored 1, 2 3, 4 , 5, 6, 7 8, 9 and 10 points. They lost by 1 point in exactly 5 games. In each of the other games they scored two times the points of its opponent. What is the total score of the opponent in all 10 games?
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Categories
Math Puzzles

[Math Puzzle] What come next in the sequence?

Puzzule

What comes next in the sequence?

0

10

1110

3110

132110

13123110

??
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Categories
Free Sites Math Websites More Math

[Math Site Review] APLUS CLICK.COM-MATH AND LOGIC PROBLEMS

LazyMaths Turtle (small)This post is part of LazyMaths’ Math website review series. Dedicated purely to help math students, the review highlights tangible learning that the website offers to its visitors and users. If you would like to have your website considered for review, drop us an email – math(at)lazymaths(dot)com.

Aplus Click Logo
A+Click-Math And Logical Problems

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Review in a Tweet –

Develop logical reasoning and creative thinking

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Grade Level –

1-12

Tell me about it – 

This website helps students become creative problem solvers in math. This website has  2250 problems, starting from the easy to the extremely difficult. Hundreds of problems in practical problems and, brainteasers, and short math situations are included.  Also, A+ Click ‘s problems have an illustration included to help the problem solver visualize the model. All problems can be solved within one minute and without using a calculator. The test adapt to the student’s ability. Tests concentrate on understanding, spatial reasoning, and problem solving rather than math rules and theorems. Beautiful site. Check it out!

What’s on the website?–

Aplusmathclick.com offers the following sections in math:

  • Arithmetic
  • Algebra
  • Geometry
  • Analysis
  • Logic
  • Applied Math
  • Exit  Exam
  • Everyday Math
  • Olympiad Math
  • Funny Math
  • Sport Math
  • Ipad eBooks

A plus click Screen Shot

What’s the best part about this website?

The best part of this website is that it’s all free. No ads, and no fees!

Any $$$?

This website is free!

Review Disclaimer: This is an independent review of the given site. It only reflects the opinion of our site reviewer(s). Views and opinions expressed may not be representative of the site or its owners or its users and visitors. LazyMaths.com and its reviewer(s) cannot be held responsible for any damage caused to hardware or any other problem caused by visiting this site or misuse of this information. Any errors or omissions should be brought to our attention by contacting the site administrator.

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Categories
Free Sites Math Websites More Math

[Math Site Review] S.O.S. MATHEMATICS.COM-FREE RESOURCE FOR MATH REVIEW MATERIAL

LazyMaths Turtle (small)This post is part of LazyMaths’ Math website review series. Dedicated purely to help math students, the review highlights tangible learning that the website offers to its visitors and users. If you would like to have your website considered for review, drop us an email – math(at)lazymaths(dot)com.

S.O.S Mathematics Logo
S.O.S. Mathematics- Free resource for math review material

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Review in a Tweet –

Browse our more than 2,500 Math pages filled with short and easy-to-understand explanations

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Grade Level –

9-12

Tell me about it – 

S.O.S Mathematics is one of the most popular websites on the world-wide web.  Browse over 2,500 Math pages filled with short and east-to understand explanations. Topics include Algebra, Trigonometry, and Calculus. Two cool features of the website are Cyber board (help forum) and Cyber Exams (helps prepare for an upcoming test.

What’s on the website?–

S.O.S.Mathematics.com offers the following sections in math:

  • Algebra
  • Trigonometry
  • Calculus
  • Differential Equations
  • Complex Variables
  • Matrix Algebra
  • Math Tables

S.O.S Mathematics Screen Shot

What’s the best part about this website?

The best part of this website is Cyber Exam. It really helps students prepare for an upcoming exam.

Any $$$?

This website is free!

Review Disclaimer: This is an independent review of the given site. It only reflects the opinion of our site reviewer(s). Views and opinions expressed may not be representative of the site or its owners or its users and visitors. LazyMaths.com and its reviewer(s) cannot be held responsible for any damage caused to hardware or any other problem caused by visiting this site or misuse of this information. Any errors or omissions should be brought to our attention by contacting the site administrator.

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