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Find out the multiplication by proper order. (i) 4 × 1225 × 25 (ii) 4 × 158 × 125 (iii) 4 × 85 × 25 (iv) 8 × 20 × 125 |
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Answer» Multiply under associativity – (i) (4 × 1225) × 25 = 1225 × (4 × 25) 4900 × 25 = 1225 × 100 = 122500 (ii) (4 × 158) × 125 = 158 × (4 × 125) 632 × 125 = 158 × 500 = 79000 (iii) (4 × 85) × 25 = 85 × (4 × 25) 340 × 25 = 85 × 100 = 8500 (iv) (8 × 20) × 125 = 20 × (8 × 125) 160 × 125 = 20 × 1000 = 20000 |
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