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Topic 8 mass

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Topic 8 mass

  1. 1. PAPER 1This question paper has 20 questions. Answer all the questions.1. Which of the following is true? A 6.7 kg = 67 g C 45 670 g = 4.567 kg B 4.73 kg = 473 g D 3 125 g = 3.125 kg2. Table 1 shows the mass of 4 objects. Object P Q R S Mass 2 kg 80 g 2 800 g 2.08 kg 2 008 g TABLE 1 Which object is the lightest? A P C R B Q D S3. 11 kg 260 g + 1 230 g – 7.3 kg = A 5 kg 190 g C 4 kg 190 g B 5 kg 75 g D 4 kg 75 g4. 0.416 kg × = 41 600 g What should be written in the above? A 10 C 1 000 B 100 D 10 000 35. 2 4 of 800 g = A 2.2 kg C 220 kg B 22 kg D 2 200 kg6. Which of the following has the largest value? 3 3 A 1 5 × 3 kg C 1 8 × 4 kg 1 1 B 1 4 × 5 kg D 1 2 × 3 kg7. 27 kg 612 g ÷ 12 = A 2 kg 401 g C 2 kg 301 g B 2 kg 361 g D 2 kg 251 g 1
  2. 2. 8. of 1 420 g = 3.55 kg Which of the following fractions is not suitable to be filled in the empty box above? 5 3 A 2 10 C 2 6 3 1 B 2 9 D 2 29. Diagram 1 shows object X and object Y on a scale. Y X DIAGRAM 1 The mass of X is 1.85 kg while the mass of Y is 700 g. Calculate the number of 50 g weights needed to be put at Y to balance the scale. A 25 C 21 B 23 D 1910. Diagram 2 shows the total mass of two objects, M and N. 900 g M N 0 5 kg 1 4 2 3 DIAGRAM 2 If object N is replaced with object Z of mass 550 g, what is the total mass, in kg, of object M and Z? A 3.16 C 3.35 B 3.25 D 3.5211. A farmer usually collects 2 960 kg of kelapa sawit in a week. Estimate the total mass, in kg, of kelapa sawit the farmer can gather in 20 weeks? A 100 000 C 60 000 B 80 000 D 6 00012. The mass of an empty box is 1.56 kg. When filled with 50 soap bars, the mass is 5 kg 310 g. What is the mass, in g, of a soap bar? A 60 C 600 B 75 D 750 2
  3. 3. 13. The mass of a jackfruit is 6 kg 480 g, while the mass of two durians is 4.6 kg. If the mass of the two durians is the same, calculate the difference between the mass, in kg, of a jackfruit and the mass of a durian. A 3.78 C 4.25 B 4.18 D 4.4514. A bread factory uses 2 604 kg of flour in 3 weeks. What is the total mass, in kg, of flour used in 10 days? A 1 240 C 1 410 B 1 320 D 1 440 115. Mandy’s mass is 42 kg. Jack’s is 4 2 kg heavier than Mandy but 2.4 kg thinner than Jason. What is Jason’s mass, in kg? A 48.9 C 46.4 B 47.5 D 45.116. The mass of a packet of salt is 2.3 kg. Calculate the mass, in g, of 9 similar packets of salt. A 20.7 C 20 700 B 2 070 D 207 00017. The mass of a marrow and a cucumber is 1.9 kg and 205 g respectively. Calculate the total mass, in kg, of a marrow and 5 cucumbers. A 2.925 C 2.105 B 2.72 D 2.09518. Given the mass of a bilingual dictionary is 3.05 kg while the mass of a Mathematics textbook is 2 1 5 kg. What is the difference between the mass, in kg, of the bilingual dictionary and the Mathematics textbook? A 4.45 C 1.65 B 2.65 D 1.4519. Table 2 shows three types of cakes sold in Yum-Yum Bakery and their mass. Cake Cream Cheese Ice cream Mass 1 kg 50 g 900 g 2.05 kg TABLE 2 Find the total mass, in kg, of 1 cream cake, 5 cheese cakes and 2 ice cream cakes. A 51.5 C 10.1 B 11.0 D 9.6520. There are some beans in a jar. The total mass of the jar and the beans is 9 kg. If the mass of the jar is 1.75 kg and the mass of one bean is about 2 g, which of the following is the best estimation for the number of beans in the jar? A Between 35 and 40 C Between 3 500 and 4 000 B Between 45 and 50 D Between 4 500 and 5 000 3
  4. 4. PAPER 2This question paper has 10 questions. Answer all the questions.1. Calculate 1.9 kg – 0.56 kg + 800 g. Give your answer in kg. Answer: 42. 5 × 600 g = kg Answer:3. 4 kg 28 g – 3.16 kg = g Answer:4. The mass of 40 marbles is 3 kg. What is the mass, in g, of 12 similar marbles? Answer:5. Diagram 1 shows two solids and their masses respectively. 1 250 g 0.86 kg DIAGRAM 1 What is the difference in mass, in kg, of the two solids? Answer:6. Aishah’s mass is 2 times Ann Lee’s mass. If Aishah weighs 52.8 kg, what is their total mass, in kg? Answer:7. Table 1 shows the mass of two types of fruits. Fruit Mass Starfruit 228 g 4 Papaya 1 1 5 kg TABLE 1 Calculate the difference in mass, in kg, of the starfruit and the papaya. Answer:8. Hafiz’s family used 2.1 kg of sugar in 5 weeks. What was the mass of sugar they used in 2 days? Answer: 4
  5. 5. 29. Choy Moy used 5 of 2 kg of red beans to make porridge. How much red bean did Choy Moy use to make the porridge? Give your answer in g. Answer:10. Diagram 2 shows the mass of an apple. 0 g 300 100 200 DIAGRAM 2 When an orange is added on the weighing machine, the reading becomes 155 g. What is the mass, in kg, of the orange? Answer: 5

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