Showing posts with label positive number. Show all posts
Showing posts with label positive number. Show all posts

Wednesday, March 27, 2013

Third Grade First Math

Introduction about third grade first math:

In this article we are going to discuss the third grade first math solving problems. Third grade first math solving problems is easy to understand and solve. Third grade first math solving problems involves basic addition, subtraction, multiplication and division problems. Third grade first math solving problems are given below.

Please express your views of this topic Multiplying Numbers in Scientific Notation by commenting on blog.

Third grade first math Example problems:


Example 1:

Add (1) + (2) =?

Solution:

The sum of positive number is a positive number obtained by adding the two numbers.

1 + 2 = 3

The addition solution is 3.

Example 2:

Subtract (5) – (2) =?

Solution:

To subtract a digit from another digit, add the additive number of the second number to the first number.

5 – 2 = 3

The subtract solution is 3.

Example 3:

Multiply (17) * (5) =?

Solution:

The product of two positive numbers is a positive number.

17 * 5 = 85

The multiple solutions are 85.

Example 4:

Divide `60/20`

Solution:

Positive number/ positive number = positive value

`60/20` = 3

The division solutions are 3

Example 5:

Which is bigger? `5/7` and `6/7`

In fraction, Bigger the numerator, bigger the fraction:

So `6/7` is the bigger fraction.

Example 6:

Determine the factor for 50

Solution:

Given number 50

50 contain the prime factor of 2, 5 and 5. It has a multiplicity of 1.

50 = 2 * 5 * 5

Solution: Factor for 50 = 2 * 5 * 5

Example 7:

Simplify 37.62 – 14.05 + 15.467 – 27.108

Solution:

To simplify the following steps

a)      First add the positive numbers

b)      Add the negative numbers

c)      Find the difference

d)     Put the sign of the greater number

Add the positive number of 37.62 + 15.467 = 53.087

Add the negative number of (-) 14.05 + (-) 27.108 = (-) 41.158

The difference between 53.087 – 41.058 = 11.929

The sign of greater number is positive, so, solution is positive 11.929

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Third grade first math practice problems:


Problem 1: Add (5) (7) =?

Choice:

a)      12

b)      13

c)      11

d)     2

Problem 2: Sub (5) (2) =?

Choice:

a)      7

b)      10

c)      3

d)     2

Problem 3: Multiply (5) (3) =?

Choice:

a)      15

b)      8

c)      2

d)     10

Problem 4:

Divide (10) (5) =?

Choice:

a)      15

b)      5

c)      2

d)     8

Answer key:

Problem 1: a

Problem 2: c

Problem 3: a

Problem 4: c

Friday, January 25, 2013

Minus Times Minus

Introduction for minus times minus:

“Minus times minus is equal to plus” that is the one of the most important rule of multiplication.  If we multiply both negative numbers then we get the result as positive number only.  For example, if  we multiply the values -4 times -3 the result will become + 12 here both the values -4 and -3 are negative number so the answer +12 is the positive number.  In this content, we will learn about the “minus times minus” with some example problems. Is this topic Substitution Method Calculator hard for you? Watch out for my coming posts.

Multiplication and Division Rule - Minus Times Minus

Multiplication rules:

There are four important rules of multiplication in mathematics.  They are listed as in the following below,

Plus `xx` plus = plus

Example: (+ 5) `xx` (+ 3) = +15

Plus `xx` minus = minus

Example: (+ 5)` xx` (- 3) = -15

Minus `xx` minus = plus

Example: (- 5) `xx` (- 3) = + 15

Minus `xx` plus = minus

Example:` (+ 5) xx (- 3) = -15`

Division rules:

`(Plus)/(plus) = plus`

Example: `(+10)/ (+2) = +5`

`(Plus)/(minus) = minus`

Example: `(+10)/ (-2) = -5`

`(minus)/(minus) = plus`

Example:` (-10)/ (-2) = +5`

`(minus)/(plus) = minus`

Example:` (-10)/ (+2) = -5`

Example Problems - Minus Times Minus

Example problem 1 – Minus times minus

Multiply the given two algebraic terms:

-3a and -2a

Solution:

The given algebraic terms are -3a and -2a

We can write the given terms

`(-3 xx -2) xx (a xx a)`

Already we know the multiplication rule,

Minus times minus is equal to plus

`(-3 xx -2) xx (a xx a)`

= `(+6) xx (a^2)`

= `6a^2`

Answer:  `6a^2`

Example problem 2 – Minus times minus

Divide:

`(-9x)/(-3x)`

Solution:

The given values are -9x and -3x

Here, we need to divide the given values

Both numerator and denominator value are in minus symbol

So the answer will become in plus

`(-9x)/(-3x) = +3x`

Answer:  +3x

I have recently faced lot of problem while learning homework help in math, But thank to online resources of math which helped me to learn myself easily on net.

Practicing Problems – Minus Times Minus

Practicing problem 1 – Minus times minus

Multiply the values:

`-8 xx -4`

Answer:  32

Practicing problem 2 – Minus times minus

Divide:

`(-96)/(-6)`

Answer:  +16