Ratio And Proportion
Akopọ
Mix white paint and blue paint in the ratio 3 to 2, then work out what 20 litres of the mixture costs. Buy a 400 gram jar for $3.20 or a 650 gram jar for $5.07 and say which is better value. Work out how many cards you can cut from a thousand centimetres of ribbon. These three questions look like three different subjects and they are all the same idea: quantities that keep a fixed relationship to one another as they change.
You will write ratios and reduce them to their simplest form, see how a ratio connects to a fraction, divide a quantity in a given ratio, and apply ratio to problems that do not announce themselves as ratio problems. You will use common measures of rate, including rates of pay and best-buy comparisons, and solve problems involving direct and inverse proportion, including repeated proportional change. On the Extension Tier you will meet exponential growth and decay, where the multiplier itself is the model.
Awọn Afojusun
- [Core] use ratio notation, including reduction to simplest form and links to fraction notation
- [Core] divide a quantity in a given ratio
- [Core] apply ratio to solve problems
- [Core] use common measures of rate, including calculating rates of pay and best-buy problems
- [Core] solve problems involving direct and inverse proportion including repeated proportional change
- [Extension] exponential growth and decay
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Oriire fun ipari ẹkọ lori Ratio And Proportion. 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.
- White paint and blue paint are mixed in the ratio 3 : 2. What fraction of the mixture is blue? A. 2/3 B. 3/2 C. 2/5 D. 3/5 Answer: C
- 6 workers build a wall in 10 days. How long would 4 workers take, working at the same rate? A. 6.7 days B. 8 days C. 15 days D. 24 days Answer: C
- The mass of 40 cubic centimetres of copper is 354 grams. What is the mass of 100 cubic centimetres? A. 141.6 g B. 414 g C. 885 g D. 1416 g Answer: C
- In the model N = 12 000 a^t with a = 0.8, what is the value of N when t = 0? A. 0 B. 0.8 C. 9600 D. 12 000 Answer: D
- Coffee costs $3.20 for 100 g, $7.75 for 250 g or $22.80 for 750 g. Which is the best value? A. the 100 g jar B. the 250 g jar C. the 750 g jar D. they are all the same value Answer: C
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Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Ratio And Proportion? 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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