The four operations
Let’s Practise
Find the product of these numbers
1
(a) 2 and 163
(b) 204 and 5
(c) 7 and 319
(d) 612 and 3
2 Work out the following. Find an estimate first by rounding the greater number to the nearest hundred. (a) 358 × 2 Estimate: (b) 5 × 1080 Estimate:
Answer:
Answer:
(c) 2244 × 3 Estimate:
(d) 3329 × 6 Estimate:
Answer:
Answer:
E
The letters A, B, C, D and E represent digits. Here are some clues about the numbers. ABC × D = EBB
A B C
×
A × A = B A × B = C C − 1 = E C = 8 Can you work out what numbers the letters represent?
E B B
11
SK_G5_SB_01_002-015.indd 11
01/12/2021 15:03
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