math

• What is the result of 381 plus 64?

  445
• How do you perform subtraction with borrowing?

  Borrow from the next column when needed
• What is the result of 514 minus 175?

  339
• How do you multiply 83 by 29 using the column method?

  Multiply 83 by 9 and then by 20
• What is the result of 83 multiplied by 29?

  2407
• How do you divide 1032 by 6?

  Use long division to find the quotient
• What is the result of 1032 divided by 6?

  172
• What is the order of operations acronym?

  BODMAS or BIDMAS
• What is the first step in the order of operations?

  Look for any brackets
• What is the result of 5 plus 10 multiplied by 2?

  25
• What is the result of 2 plus 8 squared?

  66
• How do you round 235 to the nearest hundred?

  Round down to 200
• What is the result of rounding 7680 to the nearest thousand?

  8000
• What is the result of rounding 5.18 to one decimal place?

  5.2
• How do you round 394 to one significant figure?

  Round to 400
• What is the result of rounding 1273 to one significant figure?

  1000
• What is the result of rounding 7961 to one significant figure?

  8000
• How do you round to one significant figure?

  Keep one digit followed by zeros
• What is the second significant figure of 394?


  9
• What is the second significant figure of 1273?


  2
• What is the first step in rounding to one significant figure?

  Identify the first non-zero digit
• How do you determine if you round up or down when rounding to one significant figure?

  Look at the second digit; round up if it's 5+
• If you round 7961 to one significant figure, what is the result?

  8000
• Why do some people round 394 to 400 instead of 390?

  They consider the second digit, which is 9
• What is the first significant figure in the number 0.618?


  6
• How do you round 0.618 to one significant figure?

  Round down to 0.6
• What is the result of rounding 20.501 to one significant figure?

  20
• What is the process for rounding numbers to two significant figures?

  1. Identify the first two significant digits.
  2. Look at the third digit to decide rounding.
  3. Round up if the third digit is 5 or more.
  4. Round down if the third digit is less than 5.
• When rounding 394 to two significant figures, what is the result?

  390
• What is the result of rounding 1273 to two significant figures?

  1300
• How do you round 7961 to two significant figures?

  8000
• What is the result of rounding 0.618 to two significant figures?

  0.62
• When rounding 20.501 to two significant figures, what is the result?

  21
• How do you find the highest and lowest possible values when rounding?

  • Identify the rounded number.
  • For the lowest, subtract half the rounding unit.
  • For the highest, add half the rounding unit.
• What is the lowest possible population of Wales if rounded to 12,000?

  11,500
• What is the highest possible population of Wales if rounded to 12,000?

  12,499
• What is the difference between discrete and continuous data?

  • Discrete data: specific values (e.g., population).
  • Continuous data: any value on a scale (e.g., height).
• How do you estimate the total cost of 78 magazines at £5.15 each?

  Round to £80 and £5
• What is the estimated total cost of 80 magazines at £5 each?

  £400
• How do you estimate 40.18 multiplied by 6.87 divided by 0.512?

  Round to 40, 7, and 0.5