Measures, Money And Accuracy
Akopọ
A recipe scaled from four servings to eleven, a currency converted for a holiday budget, a bridge span measured to the nearest centimetre: every real measurement or amount of money needs a consistent set of units and an honest statement of how precise it really is.
This topic ties together unit conversions, money calculations, the four ways of writing the same proportion (fraction, decimal, percentage, ratio), rounding to a given accuracy, the upper and lower bounds that a rounded measurement could hide, and standard form for very large or very small numbers.
Awọn Afojusun
- Carry out calculations using standard units of mass, length, area, volume and capacity, time and average speed using metric and SI units
- Carry out calculations using money, including converting between currencies
- Interchange fractions, decimals, ratios, proportions and percentages, selecting the most appropriate to given situations
- Use the four operations with fractions and decimals, and use percentages, ratio and proportion in problems
- Express numbers to a given degree of accuracy including a given number of decimal places or significant figures
- Solve problems using upper and lower bounds where values are given to a degree of accuracy
- Use and solve problems involving numbers in standard form
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Oriire fun ipari ẹkọ lori Measures, Money And Accuracy. 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.
- How many square centimetres are there in 2 square metres? A) 200 B) 2000 C) 20000 D) 200000 Answer: C
- A car travels 150 km in 2 hours. What is its average speed in km/h? A) 60 B) 75 C) 150 D) 300 Answer: B
- Which fraction is equivalent to 45%? A) 4/5 B) 9/20 C) 9/2 D) 4/9 Answer: B
- A length is recorded as 8.0 cm to 1 decimal place. What is the lower bound? A) 7.5 cm B) 7.9 cm C) 7.95 cm D) 8.05 cm Answer: C
- Which of these is 0.0000672 written in standard form? A) 6.72 x 10^5 B) 6.72 x 10^-5 C) 672 x 10^-8 D) 6.72 x 10^-4 Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Systems of Measurement
Make unit conversions in the U.S. system
"Prealgebra: Systems of Measurement" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/prealgebra/pages/7-5-systems-of-measurement. Access for free at https://openstax.org/books/prealgebra/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Decimal Operations
Add and subtract decimals
"Prealgebra: Decimal Operations" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/prealgebra/pages/5-2-decimal-operations. Access for free at https://openstax.org/books/prealgebra/pages/1-introduction
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