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5734Squaring Near a Round BaseCompute 98 squared in your head using the nearest round hundred.脑筋急转弯简单数值题未尝试免费5735Product of Two Numbers Around a MidpointMultiply 53 by 47 mentally by exploiting their common midpoint.脑筋急转弯简单数值题未尝试免费5736Sub-One-Percent of a Large NotionalWhat is 0.35% of 4,400,000?脑筋急转弯中等数值题未尝试免费5737Doubling Time by Rule of 72An investment compounds at 8% per year. Using the rule of 72, roughly how many years does it take to double?脑筋急转弯简单数值题未尝试免费5738Eighths to DecimalConvert the fraction 7/8 to a decimal in your head.脑筋急转弯简单数值题未尝试免费5739Compound Versus Simple Interest Gap1,000,000 earns 5% per year for 2 years. How much more does compound interest yield than simple interest over the two years?脑筋急转弯中等数值题未尝试免费5740Basis Points to DollarsA spread of 35 basis points is charged on a notional of 8,000,000. What is the dollar amount?脑筋急转弯简单数值题未尝试免费5741Reciprocal of a Small DecimalEstimate 1 divided by 0.016 mentally.脑筋急转弯中等数值题未尝试免费5742Blended Portfolio YieldA portfolio holds 60% of its value in an asset yielding 4% and 40% in an asset yielding 9%. What is the blended portfolio yield?脑筋急转弯中等数值题未尝试免费5743Quick Square-Root EstimateEstimate the square root of 2000 to one decimal place mentally.脑筋急转弯中等数值题未尝试免费5744Multiplying by ElevenMultiply 73 by 11 in your head using the digit-insertion shortcut.脑筋急转弯简单数值题未尝试免费5745Multiplying by Twenty-FiveMultiply 864 by 25 in your head using the divide-by-four shortcut.脑筋急转弯简单数值题未尝试免费5746What Percent Is X of Y45 is what percent of 360? Work it out mentally.脑筋急转弯简单数值题未尝试免费5747Up Then Down by the Same PercentA price rises 20% and then falls 20%. What is the net percentage change from the start?脑筋急转弯中等数值题未尝试免费5748Odds to Implied ProbabilityAn event is quoted at 3-to-1 odds against. What is the implied probability that it happens?脑筋急转弯简单数值题未尝试免费5749Dividing by NineDivide 5000 by 9 mentally and give the result to two decimal places.脑筋急转弯中等数值题未尝试免费5750Quick Cube-Root EstimateEstimate the cube root of 30,000 to one decimal place mentally.脑筋急转弯中等数值题未尝试免费