math revision!!

• What math curriculum is this video designed to help students catch up with?

  Year eight
• How many sections does the video divide the content into?

  Four
• What are the four sections into which the video is divided?

  Numeracy, algebra, angles/geometry, and data handling
• What is the first mathematical skill reviewed in the video?

  Long multiplication
• What method does the video use for long multiplication?

  Lattice method
• In the lattice method, where are the tens placed when multiplying individual digits?

  In the upper triangle of the cell
• In the lattice method, where are the units placed when multiplying individual digits?

  In the lower triangle of the cell
• After filling the lattice grid, how are the digits combined to get the final answer?

  By adding along the diagonals
• What is the purpose of carrying over numbers in the lattice method?

  To account for sums greater than nine
• What is another name for bus stop division?

  Short division
• In bus stop division, what is done with the remainder after dividing a digit?

  It is carried over to the next digit
• When performing bus stop division and encountering a remainder at the end, how do you continue the process?

  Add a decimal point and zeros
• What does a dot above a digit in a decimal representation indicate?

  That the digit repeats indefinitely
• When you don't know your 13 times table, how can you calculate 13 times 5?

  Do 13 times 10 and divide by 2
• What tool is suggested for visualizing operations with negative numbers?

  A number line
• Using a number line, what is the result of 4 - 7?

  -3
• Using a number line, what is the result of -2 + 8?

  6
• Using a number line, what is the result of -8 + 5?

  -3
• Using a number line, what is the result of -4 - 3?

  -7
• Using a number line, what is the result of -8 - 8?

  -16
• Using a number line, what is the result of -4 + 4?

  0
• What are the rules for simplifying two signs next to each other in a mathematical expression?

  • Plus and plus become plus (+ + = +)
  • Minus and minus become plus (- - = +)
  • Plus and minus become minus (+ - = -)
  • Minus and plus become minus (- + = -)
• Simplify the expression 5 - (-2).

  7
• Simplify the expression 7 + (-7).

  0
• Simplify the expression -3 + (-4).

  -7
• Simplify the expression -1 - (-5).

  4
• Simplify the expression -3 + (+8).


  5
• Simplify the expression 0 - (+6).

  -6
• What are the rules for determining the sign of the answer when multiplying or dividing negative numbers?

  • Plus times/divided by plus is plus (+ * + = +)
  • Minus times/divided by minus is plus (- * - = +)
  • Plus times/divided by minus is minus (+ * - = -)
  • Minus times/divided by plus is minus (- * + = -)
• What is the result of (+5) * (-2)?

  -10
• After performing multiplication or division, what determines the sign of the result?

  A sign table is used
• What is the result of multiplying a positive number by a negative number?

  A negative number
• If a number does not have a sign explicitly written, what sign is assumed?

  Positive (plus)
• According to the sign table, what is the result of a plus times a minus?

  A minus
• What is the result of multiplying +7 by +7?

  +49
• According to the sign table, what is the result of a plus times a plus?

  A plus
• What is the result of multiplying -3 by +4?

  -12
• According to the sign table, what is the result of a minus times a plus?

  A minus
• What is the result of multiplying -2 by -5?

  +10
• According to the sign table, what is the result of a minus times a minus?

  A plus