2. Find the values of:
(a) 18×(- 6 + 4) / 9
(b) 10+4 [3- {1+2-(4-9)}]
(c) - 5 - (- 48) / (12) + (- 2) ×6
(d) -40+ (-1)-(2) × 6÷3-2
(e) 7+ 4-[3-{1+2-(4-9)}]
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2. Find the values of:
(a) 18×(- 6 + 4) / 9
(b) 10+4 [3- {1+2-(4-9)}]
(c) - 5 - (- 48) / (12) + (- 2) ×6
(d) -40+ (-1)-(2) × 6÷3-2
(e) 7+ 4-[3-{1+2-(4-9)}]
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Answer:
1. 18 × ( -6+4 ) / 9 = 18 × ( -2)/9 = 2× (-2) = -4
2. 10 + 4 [ 3 - { 1+2-(4-9)}] = 10 + 4 [ 3 - { 3 -(-5)}]
= 10 + 4 [ 3 - (3 +5)] = 10 + 4 [3-8]
= 10 + 4×(-5) = 10 + (-20) = 10-20 = -10
3. -5 - (-48)/(12) + (-2)×6 = -5 + 48/12 - 2×6
= -5 + 4 - 12 = -17 + 4 = -13
4. -40 + (-1)-(2) × 6÷3-2 = -40 + (-1)-(2)× 2-2
= -40 + (-1) - 2×0 = -40 - 1 - 0 = -41
5. 7 + 4 - [3- { 1+2-(4-9)}] = 11 - [ 3 - { 3 - (-5)}]
= 11 - [ 3 - { 3+5 } ] = 11 - [ 3 - 8 ]
= 11 - ( -5) = 11 + 5 = 16