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1. In the equation: 45,000 + x = 80,000, what is the value of x?
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2. In the equation: y - 24,500 = 35,500, what is the value of y?
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3. Evaluate: 80,000 - 42,750 =
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4. What is the missing digit in: 52,_40 + 14,350 = 67,190?
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5. A warehouse had 75,000 kg of wheat. On Wednesday it shipped 24,500 kg, and on Thursday 18,700 kg. How many kg remain?
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6. Which property is demonstrated by: 840 + 0 = 840?
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7. Evaluate mentally using compensation: 94 - 49 =
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8. In a 3-part bar model with Whole = 100,000, Part 1 = 35,000, and Part 2 = 42,000, what is Part 3?
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9. Evaluate: 456,780 + 243,220 =
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10. In the vertical subtraction: 64,500 - _2,100 = 32,400, what is the missing digit?
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11. If m - 14,000 = 26,000, then m equals:
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12. Evaluate: 500,000 - 184,250 =
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13. A school raised 90,000 LE. It spent 34,200 LE on computers and 25,800 LE on laboratory equipment. How much money remains?
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14. Which expression is equivalent to: (45 + 55) + 38?
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15. Evaluate mentally: 156 + 98 =
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16. In the problem: 95,400 - k = 62,100, what is k?
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17. What is the difference between 500,000 and 1?
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18. If a = 25,000 and b = 35,000, what is a + b + 0?
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19. A stadium sold 45,600 tickets in pre-sale and 28,400 at the gate. If 70,000 attendees arrived, how many ticket holders did not attend?
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20. Solve for variable z: z - 38,500 = 41,500