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Quick Estimation Techniques for Mental Calculation Competence

Improve mental computation skills by estimating quotients using compatible numbers. Practice with numbers like 5,903.6, 867.9, 632.8, 7,124.8, 513.5, 3,983.8, 12,143.6, and 23,983.6 to enhance quick estimation abilities.

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Quick Estimation Techniques for Mental Calculation Competence

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  1. Estimating Quotients

  2. Compatible Numbers Numbers that are easy to compute mentally. • Estimate: 5,903 6 = 6,000 6= Estimate: 867 9= 1,000 900 9 = 100

  3. Estimate • 632 8 • 7,124 8 600 8 = 80 7,200 900 8 =

  4. Estimate • 513 5 • 3,983 8 500 5 = 100 4,000 8 = 500

  5. Estimate • 12,143 6 • 23,983 6 12,000 6 = 2,000 24,000 6 = 400

  6. Estimate

  7. 8 15,751 5 1,989 2,000 16,000/8= 2,000/5= 400 32,598 3 6 23,587 33,000/3= 11,000 24,000/6= 4,000 7 13,641 1,789 5 14,000/2= 2,000 2,000/5= 400

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