Best Answer

For a basic estimate, focus on the hundreds alone:

200*3 = 600

For a bit more precision, 14 is close to 15 which is easier to triple. Simply add it to the 600 above.

15*3 = 45

600 + 45 = 645

For an accurate answer, subtract off the extra three you threw in from multiplying by 15 instead of 14

600+45 - 3 = 642

Q: What is the estimate of 214 x 3?

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77,040 because 107 x 2 = 214 214 x 3 = 642 642 x 4 = 2568 2568 x 5 = 12840 12840 x 6 = 77040

2 x 107 = 214

214 = (2 x 100) + (1 x 10) + (4 x 1)

107 x 2 = 214

2 x 107 = 214

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77,040 because 107 x 2 = 214 214 x 3 = 642 642 x 4 = 2568 2568 x 5 = 12840 12840 x 6 = 77040

77,040 That is correct, because... 107 x 2 = 214 214 x 3 = 642 642 x 4 = 2568 2568 x 5 = 12840 12840 x 6 = 77040

1 x 214, 2 x 107.

1 x 642, 2 x 321, 3 x 214, 6 x 107.

214

70 ft x 214 ft = 0.344 acres, approx.70 ft x 214 ft = 0.344 acres, approx.70 ft x 214 ft = 0.344 acres, approx.70 ft x 214 ft = 0.344 acres, approx.

214 x 6 = 1284

214 x 15 = 3210

2 x 107 = 214

214 = (2 x 100) + (1 x 10) + (4 x 1)

81,900

245