Preparation for checkpoint math 1 di ght
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The document contains a series of math problems and explanations in Indonesian. It provides step-by-step workings for problems involving factors, range, median, percentages, probability, exponents, coordinate geometry, gradients, tables of values, equations, angles, and multiplication. The document demonstrates how to solve various types of math questions and explains concepts like factors, percentages, exponents, and coordinate geometry.
Preparation for checkpoint math 1 di ght
- 1. SUKSES MENAKLUKKAN CHECKPOINT 2014
- 2. 1. Write down all the factors of 18 • 18 = 1 x 18 • 18 = 2 x 9 • 18 = 3 x 6 So, the factors of 18 are 1, 2, 3, 6, 9, 18
- 3. 2. Work Out 1, 9, 3, 4, 7, 13, 10, 1, 7, 8, 7 a. The range (Jangkauan) b. Median (Nilai tengah setelah data diurutkan) a. Range = data terbesar – data terkecil Range = 13 – 1 = 12 b. Median 1, 1, 3, 4, 7, 7, 7, 8, 9, 10, 13 = 7 Urutkan Dulu Ya… 5 data 5 data
- 4. 3. Calculate 8 as a percentage of 40 So, 8 is 20% of 40
- 5. 4. Complete the number You are told that • The only number on the spinner are 1, 6, and 7 • The probability of the spinner landing on a section numbered with a 1 is ¼ • The spinner is equally likely to land on an odd number as it is to land on an even number (ganjil genap kemungkinannya sama) 1 6 7 7 6 …. …. …1. 6 6
- 6. 5. Work out the product of -2, -8, and -5
- 7. 6. The map shows a School and a Hospital North ● School North ● Hospital Scale: 1 cm to 40 m a. Work out the actual distance from the school to the Hospital b. The bearing of a House from the hospital is 250o The bearing of a house from the school is 120o Mark the position of the house on the map 8 cm = 8 x 40 m = 320 m KLIK 250o 120o ● House KLIK
- 8. 100000 = 105 ퟒퟔ. ퟕퟖퟒ ퟏퟎퟎퟎ = ퟎ. ퟎퟒퟔퟕퟖퟒ Penulisan decimal pake titik lho ya... 0.046784 ≑ 4.6784 x 10-2 ≑ 4.7 x 10-2 ≑ 0.047 Correct to 2 significant figure tidak sama dengan pembulatan 2 decimal. Maaf ya, yang tadi perlu diralat penjelasannya untuk nomor 16.c
- 9. a) 30 = ퟏ b) 2-4 = ퟏ ퟐퟒ = ퟏ ퟏퟔ
- 10. 9. (a) Write down the gradient of the line y = -2x + 5 Gradient = -2 (b) Complete the table of value for y = -2x + 5 Mathsyairozi x -1 2 4 6 y 7 1 -3 -7 x = -1 --- y = -2(-1) + 5 = 2 + 5 = 7
- 11. 100 – 2 x 33 = 100 – 2 x 27 = 100 – 54 = 46
- 12. a. 24 – 18b = 6.4 – 6.3.b = 6(4 – 3b) b. Expand and simply 5b – 3(2x + 3b) = 5b – 6x – 9b = – 4b – 6x
- 13. cara 2 ☻ A(1, 3) M (4,12) ☻ 4 – 1 = 3 12 – 3 = 9 Xb – 4 = 3 Xb = 7 Yb – 12 = 9 Yb = 21 B( Xb , Yb )
- 14. x = 3y 2x + y = 28 2x + y = 28 karena x = 3y maka 2(3y) + y = 28 6y + y = 28 7y = 28 y = 4 x = 3y x = 3 . 4 x = 12
- 15. 130o E A B C D G a) Mark on the diagram an angle which is ALTERNATE to angle CBE b) Calculate the size of angle FEG F KLIK 50o KLIK (Bersebrangan)
- 16. 6 cm 6 cm
- 17. 32 6 = 52 6 = 5 1 3
- 18. Kata kunci: • bilangan yang dikalikan dengan 1 pasti hasilnya adalah bilangan itu sendiri. • Sedangkan jika suatu BILANGAN POSITIF dikalikan dengan BILANGAN KURANG DARI 1 pasti hasilnya adalah LEBIH KECIL DARI BILANGAN ITU SENDIRI • 0.67 itu lebih kecil dari 1, jadi 782 x 0.67 hasilnya pasti lebih kecil dari 782 “THE MULTIPLICATION OF POSITIVE NUMBER BY A NUMBER LESS THAN ONE WILL ALWAYS GET SMALLER NUMBER”
- 19. Fania and Nana work in the same office. The travel graph shows their journey home last Monday 10 20 19 15 Nana Fania