Level 4 - Error Analysis Expressions

Identify and Correct the Error.

• GEMDAS means we solve multiplication and division let to right. Whatever comes first.

• GEMDAS means we solve multiplication is always solved last.

• GEMDAS means we solve addition before multiplication.

• GEMDAS means we solve multiplication and division right to left. Whatever comes first.

Identify and Correct the Error.

• GEMDAS does not matter.

• There are no rules in Math.

• If we do NOT follow GEMDAS our answer will be wrong.

• We do not have rules when solving an expression.

Identify and Correct the Error.

• 12 + 10 ÷ 4 = 5.5

  (12 + 8) ÷ 4 = 5

  With parentheses, we do the operation in the parentheses first.

• 12 + 8 ÷ 4 = 14

  (12 + 8) ÷ 4 = 5

  With parentheses, we do the operation in the parentheses first.

• 12 + 8 ÷ 4 = 14

  (12 + 8) ÷ 4 = 14

  With parentheses, we do the operation in the parentheses first.

• 12 + 8 ÷ 4 = 15

  (12 + 8) ÷ 4 = 15

  With parentheses, we do the operation outside the parentheses first.

Identify and Correct the Error.

• 6 + [4 x 2 + (7 - 2)]=

  6 + [4 x 2 + 5)]

  6 + [4 x 7]

  6 + 28 =

  34

• They solved it correctly.

• 6 + [4 x 2 + (7 - 2)]=

  6 + [4 x 2 + 5)]

  6 + [8 + 5]

  6 + 13 =

  19

• 6 + [4 x 2 + (7 - 2)]=

  6 + [32 + 5)]

  6 + [37]

  6 + 37 =

  43

Identify and Correct the Error.

• According to GEMDAS, subtraction comes after addition when addition comes first from left to right, or if addition is in parentheses.

• According to GEMDAS, addition always comes first.

• According to GEMDAS, this is a correct statement.

• According to GEMDAS, addition comes after subtraction when addition comes first from left to right, or if addition is in parentheses.

Identify and Correct the Error.

• 6 x 6 = 36

  36 + 6 = 42

• 6 + 6 + 6 = 18

• 6³ = 6 x 6 x 6 = 216

• 6 + 6 = 12

  12 x 6 = 72

Identify and Correct the Error.

• This statement is correct.

• Exponents are not the same as multiplication. However, exponents are related to multiplication because an exponent is repeated multiplication, or how many times you multiply the base by itself.

• Exponents are the same as multiplication because an exponent is repeated multiplication.

• Exponents have nothing to do with multiplication, it is subtraction.

Identify and Correct the Error.

• The correct answer = 8

• The correct answer = 10

• The correct answer = 32

• The correct answer = 5

Identify and Correct the Error.

• 14² = 28

  2¹⁴ = 28

• 14² = 196

  2¹⁴ = 28

• 14² = 7

  2¹⁴ = 7

• 14² = 196

  2¹⁴ = 16,384

Identify and Correct the Error.

• 3 + 12 x 5 -2 = 61

  3 + 12 x (5 – 2 ) = 39

• 3 + 12 x 5 -2 = 39

  3 + 12 x (5 – 2 ) = 39

• 3 + 12 x 5 -2 = 73

  3 + 12 x (5 – 2 ) = 20

• 3 + 12 x 5 -2 = 61

  3 + 12 x (5 – 2 ) = 61