1. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd About

2. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Jess is as tall as the metre ruler. She is about 1 metre tall.

3. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Add mentally

4. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Add 58 and 8 mentally.

5. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd After

6. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Tuesday comes after Monday.

7. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd a.m.

8. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Any time from midnight to before noon. Example: 7.25 in the morning can also be written as 7.25 a.m.

9. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Bar graph

10. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A bar graph uses bars instead of pictures or symbols to show data. Example:

11. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Before

12. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Wednesday comes before Thursday.

13. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Calendar

14. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A table or chart that shows the days of the week and months of the year. Example: This calendar is for the month of January in the year 2012.

15. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Carroll diagram

16. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A Carroll diagram helps us sort data in a ‘yes’ or ‘no’ manner. A simple Carroll diagram has two groups. If the first group is labelled ‘A’, then the second group is usually labelled ‘Not A’.

17. Carroll diagram Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The Carroll diagram sorts the children according to whether they wear glasses.

18. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Centimetre (cm)

19. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for length. Example: The length from the 0 mark to the 1 mark on the ruler is 1 centimetre (or 1 cm).

20. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Cents (¢)

21. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for money. Example: The quarter has a value of 25 cents. We can also write it as 25¢.

22. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Change

23. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Tom buys a top that costs 45¢. He will get back 30¢ in change if he pays the cashier 75¢.

24. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Divide

25. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd We divide to share objects equally among groups or put objects into equal groups to find the number of groups. We use ÷ when we divide.

26. Divide Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Share the storybooks equally between Tom and Ari. Each boy gets 2 storybooks.

27. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Division sentence

28. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: ‘4 ÷ 2 = 2’ is a division sentence. We read this as ‘4 divided by 2 equals 2’.

29. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Dollars ($)

30. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for money. Example: This note has a value of 10 dollars. We can also write it as $10.

31. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Double

32. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd When we find the double of a number, we add the number to itself. Example: Double of 20 = 20 + 20 So, double of 20 = 40.

33. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Earlier

34. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: 2.10 p.m. is 30 minutes earlier than 2.40 p.m.

35. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Gram (g)

36. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for mass. Example: The mass of the sweet is 5 grams (or 5 g).

37. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Half

38. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd When we find half of a number, we divide the number by 2. Example: 24 ÷ 2 = 12 So, half of 24 is 12.

39. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Half litre ( l )

40. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Half litre ( l ) 1 2 A unit of measurement for capacity. Example: The capacity of the vase is half litre (or l ).

41. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Heavier

42. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The pineapple is heavier than the papaya.

43. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Heaviest

44. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The watermelon is the heaviest.

45. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Kilograms (kg)

46. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for mass. Example: The mass of the bag of sugar is 1 kilogram (or 1 kg).

47. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Later

48. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: 10.20 a.m. is 1 hour later than 9.20 a.m. 1 hr later

49. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Less than

50. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The stool is shorter than the metre ruler. It is less than 1 metre tall.

51. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Lighter

52. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The tennis ball is lighter than the basketball.

53. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Lightest

54. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The beach ball is the lightest.

55. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Litre ( l )

56. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for capacity. Example: This is a 1 litre (or 1 l ) measuring jug.

57. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Longer

58. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Pencil B is longer than Pencil A. Pencil C Pencil B Pencil A

59. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Longest

60. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Pencil C is the longest. Pencil C Pencil B Pencil A

61. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Metre (m)

62. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A unit of measurement for length. Example: The ruler is 1 metre (or 1 m) long.

63. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Midnight

64. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd The end of one day and the start of the next. Example:

65. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd More than

66. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: The teacher is taller than the metre ruler. She is more than 1 metre tall.

67. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Multiples

68. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: When any number is multiplied by 2, the answer is a multiple of 2.

69. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Multiplication sentence

70. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: ‘2 × 4 = 8’ is a multiplication sentence. We read this as ‘2 times 4 equals 8’.

71. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Multiply

72. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd When we add equal groups together, we are multiplying. We use × when we multiply.

73. Multiply Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: We can multiply to find out how many apples there are. 2 groups of 4 = 8 2 × 4 = 8 There are 8 apples altogether.

74. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Noon

75. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Middle of the day. Example:

76. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Note

77. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: This is a one dollar ($1) note. It has two sides – front and back.

78. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Number bond

79. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A number bond shows the parts that make up the whole. Example: 2 and 5 make 7.

80. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd p.m.

81. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Any time from noon to before midnight. Example: 7.25 in the evening can also be written as 7.25 p.m.

82. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Repeated addition

83. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: We can use repeated addition to find out how many ducklings there are in 3 groups of 2. 3 groups of 2 = 2 + 2 + 2 = 6 There are 6 ducklings in 3 groups of 2.

84. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Scale

85. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Measurements marked at regular intervals on a graph. Example: Scale

86. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Shorter

87. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Crayon C is shorter than Crayon A.

88. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Shortest

89. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Crayon B is the shortest.

90. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Subtract mentally

91. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Subtract 4 from 46 mentally.

92. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Taller

93. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Giraffe B is taller than Giraffe A.

94. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Tallest

95. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: Giraffe C is the tallest.

96. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Timetable

97. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Example: This is a weekly timetable.

98. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd Weighing scale

99. Maths SMART Grade 2 © 2012 Alston Publishing House Pte Ltd A scale that measures the masses of objects. Example: We can read the mass of the notebook by looking at the markings on the weighing scale. The red pointer is at 100. So, the mass of the notebook is 100 g.