Q&A - P3 Math

[doraemo]

jedamum:

doraemo:

hi ,


Anyone able to help me with the correct method of solving:

Richard and Andrew had the same amount of money each.

When Richard spent $147, Andrew had 4 times as much money as what Richard had left.

How much did Richard have at first?


Thanks so much in advance .

can use model.
At first:
R[][][][]
A[][][][]

After spending $147
R[]
A[][][][]

ie 3U = 147
1U = 147 / 3 = 49
At first, Richard has as much as Andrew ie 4U ie 4 x 49 = $196
or Richard at first = $49+$147=$196

This is my first attempt in this thread.

Thanks!!!!!!!!!!

[Just4Good]

ChiefKiasu:

From Ai Tong Pri 3 SA1 Maths:


A teacher gave her students some balloons. If she gave 6 balloons to each student, she will have 2 balloons left. If she gave 8 balloons to each student, she will be short of 2 balloons. What is the smallest possible number of students she has?

Try to do this without using ALGEBRA!

Algebra? :? :? :?

What's that? Look's hard. Rather :stupid: than answer the question. (Just Kidding)

[Just4Good]

ChiefKiasu:

From Ai Tong Pri 3 SA1 Maths:


A teacher gave her students some balloons. If she gave 6 balloons to each student, she will have 2 balloons left. If she gave 8 balloons to each student, she will be short of 2 balloons. What is the smallest possible number of students she has?

Try to do this without using ALGEBRA!

Algebra? :? :? :?

What's that? Look's hard. Rather :stupid: than answer the question. (Just Kidding)

[Just4Good]

ChiefKiasu:

From Ai Tong Pri 3 SA1 Maths:


A teacher gave her students some balloons. If she gave 6 balloons to each student, she will have 2 balloons left. If she gave 8 balloons to each student, she will be short of 2 balloons. What is the smallest possible number of students she has?

Try to do this without using ALGEBRA!

Still thinking what is Algebra..... :?

[Just4Good]

ChiefKiasu:

From Ai Tong Pri 3 SA1 Maths:


A teacher gave her students some balloons. If she gave 6 balloons to each student, she will have 2 balloons left. If she gave 8 balloons to each student, she will be short of 2 balloons. What is the smallest possible number of students she has?

Try to do this without using ALGEBRA!

Oh! I got it !




Algebra is a branch of mathematics that uses mathematical statements to describe relationships between things that vary over time. These variables include things like the relationship between supply of an object and its price. When we use a mathematical statement to describe a relationship, we often use letters to represent the quantity that varies, since it is not a fixed amount. These letters and symbols are referred to as variables. (See the Appendix One for a brief review of constants and variables.)

The mathematical statements that describe relationships are expressed using algebraic terms, expressions, or equations (mathematical statements containing letters or symbols to represent numbers). Before we use algebra to find information about these kinds of relationships, it is important to first cover some basic terminology. In this unit we will first define terms, expressions, and equations. In the remaining units in this book we will review how to work with algebraic expressions, solve equations, and how to construct algebraic equations that describe a relationship. We will also introduce the notation used in algebra as we move through this unit.

(http://cstl.syr.edu/fipse/algebra/unit1/algebra.htm)

[youngtay]

Hi, please help


The average monthly salary of Hui Hui and her colleagues is S$4,300.00. Hui Hui earns S$4,700 each month and the average monthly salary of her colleagues is S$4,200.00. How many colleagues does she have?

TIA

[Mathmaniac]

youngtay:

Hi, please help


The average monthly salary of Hui Hui and her colleagues is S$4,300.00. Hui Hui earns S$4,700 each month and the average monthly salary of her colleagues is S$4,200.00. How many colleagues does she have?

TIA

Hui Hui earns $4,700-$4,200 = $500 more than an average colleague.

When she is added, average salary increases by $4,300-$4,200 = $100.

Total number of people = 500/100 = 5

Number of colleagues = 5-1 = 4

[youngtay]

Hi, Mathmaniac


Thanks

[Muffins]

A wrord of caution, Just4good,


If you post your comments immediately one after another, with the same words in them i.e. \"Algebra? What's that? :? :? :? Look's hard. Rather :stupid: than answer the question. (Just Kidding)\"

Chief might ban you for trolling the portal...... :slapshead:

[usaik]

Hi,


I need help on the following question.

Estimate the value of 372 ÷ 4

The answer is 360 ÷ 4. So 372 ÷ 4 is about 90. But how do one estimate 372 to be 360. What is the working to show that 372 can be estimated to be 360?