Percentages
Akopọ
Percentages appear everywhere: exam scores, shop discounts, bank interest rates, population growth and tax calculations. Mastering them gives you a single, flexible tool for comparing proportions, measuring change and solving financial problems across the entire Edexcel IGCSE specification.
This topic builds from the basic idea that 'per cent' means 'per hundred', through conversions and calculations, all the way to reverse percentages and compound interest. You will see how the multiplier method turns multi-step percentage problems into a single multiplication, saving time and reducing errors on both calculator and non-calculator papers.
Awọn Afojusun
- Understand that 'percentage' means 'number of parts per 100'
- Express a given number as a percentage of another number
- Express a percentage as a fraction and as a decimal
- Understand the multiplicative nature of percentages as operators
- Solve simple percentage problems, including percentage increase and decrease
- Use reverse percentages
- Use compound interest and depreciation
- [Higher] Use repeated percentage change
- [Higher] Solve compound interest problems
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Percentages. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- What is 3/8 as a percentage? A) 37% B) 37.5% C) 38% D) 38.5% Answer: B
- A shirt costs $50 and is reduced by 20%. What is the sale price? A) $10 B) $30 C) $40 D) $45 Answer: C
- After a 10% increase, a price becomes $55. What was the original price? A) $45 B) $49.50 C) $50 D) $54 Answer: C
- What multiplier represents a 35% decrease? A) 0.35 B) 0.65 C) 1.35 D) 1.65 Answer: B
- Which of these is equivalent to 0.4%? A) 4/10 B) 4/100 C) 4/1000 D) 4/10000 Answer: C
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
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Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Percentages? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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