Proportions and percents – 3ºESO

Proportions The number of breads and the price we pay are in a direct proportion (more bread more money) Complete the gaps The number of workers and the time they spend in constructing something are in an inverse proportion (more workers less time) Complete the gaps Exercise 1: Decide if the following magnitudes are inSigue leyendo «Proportions and percents – 3ºESO»

Pi-Sweet: A new bakery – Fractions

There is a new bakery in the neighborhood. They have the following offers to welcome the customers: Activity 1: How much will I pay for: a) Two breads. b) One bread and a pie. c) Four muffins and a croissant. d) A pie and a croissant. e) Four muffins and one bread. Activity 2: WeSigue leyendo «Pi-Sweet: A new bakery – Fractions»

Unit 1 – Natural Numbers

Natural numbers are the numbers used for counting things. Natural numbers are positive numbers (numbers that are more than 0). They are 1, 2, 3, 4, 5… and so on until infinity. You can use them for counting («there are 3 apples on the table»), and for ordering («this is the third largest city inSigue leyendo «Unit 1 – Natural Numbers»

Unit 2 – Divisibility

Exercises Download the exercises as a pdf Interactive Exercises Multiples part 1 Multiples part 2 Divisors part 1 Divisors part 2 Divisibility rules Divisibility Bingo Choose ten of the following numbers, then go to the link below to start playing 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18Sigue leyendo «Unit 2 – Divisibility»

Unit 3 – Integers

There are many situations in which you need to use numbers below zero, one of these is temperature, others are money that you can deposit (positive) or withdraw (negative) in a bank, steps that you can take forwards (positive) or backwards (negative). Positive integers are all the numbers greater than zero: 1, 2, 3, 4,Sigue leyendo «Unit 3 – Integers»

Unit 4 – Fractions

We call the top number the Numerator, it is the number of parts we have. We call the bottom number the Denominator, it is the number of parts the whole is divided into. A fraction is a part of a whole. Equivalent fractions have the same value, even though they may look different. To findSigue leyendo «Unit 4 – Fractions»

Unit 5 – Decimal Numbers

Place Value Decimal numbers such as 3.762 are used in situations which call for more precision than whole numbers provide. As with whole numbers, a digit in a decimal number has a value which depends on the place of the digit. The places to the left of the decimal coma are ones, tens, hundreds, andSigue leyendo «Unit 5 – Decimal Numbers»

Unit 6 – Algebra

Algebraic language We use the algebraic language to translate common situations into math expressions. The first thing we have to do is to learn the basic expressions of this new language. Exercise 1: Keywords in algebra. Complete the table Exercise 2: Join each sentence with its expression Exercise 3: Crossword Exercise 4: Find out theSigue leyendo «Unit 6 – Algebra»

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