3.15 Self-assessment

Mathematics

Space and shape

Educator section

Memorandum

14

(a) 42

(b) 70

(c) 6

(d) 9

(e) 18

(f) 36

(g) 114

(h) 117

(i) 133

(j) 146

(k) 9

(l) 8

(m) 8

(n) 3

(o) 9

Leaner section

Content

Activity: self-assessment [lo 1.8]

12.4 BRAIN-TEASER!

An aeroplane flies for 200 km in the direction of 060 degrees. Then it changes direction and flies another 480 km in the direction of 110˚. Can you draw the aeroplane’s route? (Hint: 1 cm = 100 km. Draw another North line when direction changes. )

13. Time for self-assessment

14. Let us see how you do in the following mental test.

a) 6 x 7 = _______________________

b) 14 x 5 = ______________________

c) 54 ÷ 9 = ______________________

d) 63 ÷ 7 = ______________________

e) 26 – 8 = ______________________

f) 43 – 7 = ______________________

g) 123 – 9 = _____________________

h) 132 – 15 = ____________________

i) 114 + 19 = ____________________

j) 13 + 118 + 15 = _______________

k) ¼ of 36 = _____________________

l) ¹/³ of 24 = _____________________

m) ¹/ ₈ of 64 = _____________________

n) ¹/ ₆ of 18 = _____________________

o) ¹/ ₅ of 45 = _____________________

• Complete: I have ......................... answers correct.

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.8: We know this when the learner performs mental calculations involving squares of natural numbers to at least 10 ² and cubes of natural numbers to at least 5 ³ .