Numerical Expressions and Models

How can you represent 3 times the difference between 42 and 23?

• (42 - 23) x 3

• 42 + 23 x 3

• 42 - (23 x 3)

• None of the above

What is another way to express the sum of 4 twelves and 3 sixes?

• (4 x 12) + (3 x 6)

• 12 + 12 + 12 + 12 + 6 + 6 + 6

• Both A and B

• None of the above

What is the result of comparing the expressions (2 x 3) + (5 x 3) and 3 x (2 + 5)?

• A) >

• B) <

• C) =

How many units of fifty-three are there in 28 x (3 + 50)?

• 28

• 82

• 50

What is the value of (2 x 3) + (5 x 3)?

• 15

• 18

• 21

What is the numerical expression for 'The difference between 9 thirty-sevens and 8 thirty-sevens'?

• (9 x 37) - (8 x 37)

• 9 - 8 x 37

• 9 x (37 - 8)

• (9 + 37) - (8 + 37)

Write the expression (50 × 2) + (15 × 2) in words.

• Fifty times two plus fifteen times two

• Fifty plus two times fifteen plus two

• Fifty divided by two plus fifteen divided by two

• Fifty minus two times fifteen minus two

What is the value of the expression (98 - 78) × 11 in words?

• Two hundred twenty

• Two hundred

• Two thousand two hundred

• Two thousand

Which expression is greater? A) (14 + 12) × (8 + 12) B) (14 × 12) + (8 × 12)

• (14 + 12) × (8 + 12)

• (14 × 12) + (8 × 12)