1 There are 30 learners in Jade’s class. Each learner has 20¢. How much money do they have altogether?
30 × 20 = (3 × 2) × 100 = 600
They have 600¢ altogether. So, Jade’s class has a total of $6. Find 24 × 200 mentally. First, multiply 24 × 2. 24 × 2 = 48 Now, multiply the answer by 100. 48 × 100 = 4800 So, 24 × 200 = 4800
2
Complete the following mentally.
(a) 600 × 300 =
(b) 100 × 1000 =
(c) 70 × 400 =
(d) 1200 × 50 =
(e) 4000 × 10 =
(f) 80 × 80 =
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