Multiplying decimals learning ladder

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Multiplying decimals learning ladder

  1. 1. Multiplyingdecimals
  2. 2. 1Estimate your answer e.g. 24.6 x 39.5approximately 25 x 40 = 1000
  3. 3. 2Remove thedecimal point e.g. 24.6 x 39.5 becomes 246 x 395
  4. 4. 3Partition each number 246 x 395 (200+40+6) x (300+90+5)
  5. 5. 4Multiply using the grid method X 300 90 5 200 60 000 18 000 1 000 79 000 40 12 000 3 600 200 15 800 + 2 370 6 1 800 540 30 97 170
  6. 6. 5Replace thedecimal point Estimate = 1000 So 97170 becomes 971.70

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