Review of basic operations and vocabulary Number Trick Review of basic operations and vocabulary

Number Trick 1 Stage Words # Expression Picture 1 2 3 4 5 6 Think of a number from 1 to 25. 3 13 X Add 9 to it. 12 22 x + 9 Multiply the result by 3. 36 66 3(x + 9) Subtract 6 from the current answer. 30 60 3(x + 9) - 6 Divide this answer by 3. 10 20 Now subtract your original number. 7 7

Number Trick 1b Stage Words # Expression Picture 1 2 3 4 5 6 Pick any number 10 13 X Subtract 6 from it 4 7 x - 6 Multiply the result by 2. 8 14 2(x - 6) Add 8 to the current answer. 16 22 2(x - 6) + 8 Divide this answer by 2. 8 11 Now subtract your original number. -2 -2

Number Trick 2 Stage Words # Expression Picture 1 5 3 2 10 6 30 18 4 36 24 12 8 7 Pick any number X Double your number 2X Multiply your answer by 3 3(2X) Add 6 to your result 3(2X) + 6 Divide your answer by 3 Subtract your current answer by your original number Now subtract by your original number

Number Trick 2B Stage Words # Expression Picture 1 4 -2 2 8 3 -5 5 -8 -20 6 -12 -18 7 -16 Pick any number X Add 4 to your number X+4 Divide your answer by 2 Take away 6 from your result Multiply your answer by 4 Subtract your current answer by your original number Now subtract by your original number