Mathematics Specification A - 4MA1 PearsonEdexcel

Measures

Gbogbo ọrọ náà

Measures connect mathematics to the physical world. Every time you read a thermometer, time a race, estimate the height of a building or calculate how fast a car is travelling, you are applying the ideas in this topic. Fluency with scales, units and compound measures is essential across science, geography and everyday life.

You will learn to read scales accurately, convert between 12-hour and 24-hour time, estimate real-world quantities sensibly, measure and describe angles using three-figure bearings, and work with the compound measures speed, density and pressure using their defining formulae.

Ebumnobi

Interpret scales on a range of measuring instruments
Calculate time intervals in terms of the 24-hour and the 12-hour clock
Make sensible estimates of a range of measures
Understand angle measure including three-figure bearings
Measure an angle to the nearest degree
Understand and use the relationship between average speed, distance and time
Use compound measure such as speed, density and pressure

Akọmọ Ojú-ẹkọ

A nurse reads a thermometer graduated in half-degree intervals. A pilot reports a heading of 072 degrees to air-traffic control. An engineer calculates whether a bridge can withstand a pressure of 850 kPa. Behind each of these tasks lies the same skill: extracting a reliable number from a measuring instrument or formula and knowing what it means.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Measures. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

A thermometer has labelled marks at 20 and 30 with 5 small divisions between them. The reading is 2 divisions above 20. What is the temperature? A) 22 B) 24 C) 25 D) 28 Answer: B
A train departs at 14:35 and arrives at 17:10. How long is the journey? A) 2 hours 25 minutes B) 2 hours 35 minutes C) 3 hours 25 minutes D) 2 hours 45 minutes Answer: B
The bearing of point B from point A is 245 degrees. What is the bearing of A from B? A) 065 degrees B) 425 degrees C) 155 degrees D) 045 degrees Answer: A
A car travels 150 km in 2 hours 30 minutes. What is the average speed? A) 75 km/h B) 50 km/h C) 60 km/h D) 65 km/h Answer: C
A block has a mass of 240 g and a volume of 80 cm cubed. What is its density? A) 0.3 g/cm cubed B) 3 g/cm cubed C) 30 g/cm cubed D) 320 g/cm cubed Answer: B