Models Expressions

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

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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

Which equation matches the model shown above?

• 2 x 1/4 = 1/2

• 2 x 1/5 = 2/5

• 1 + 1 = 2

• 1/5 x 3 = 3/5

Which equation matches the model shown above?

(answers are simplified!)

• 2 x 5 = 10

• 10 x 2/4 = 5

• 1/2 x 5 = 2 1/2

• 2/4 x 9 = 4 1/2

Which equation matches the model shown above? (answers are simplified!)

• 2/6 x 1/3 = 1/9

• 1/3 x 1/3 = 1/9

• 2 x 2/3 = 1 1/3

• 1/3 x 3 = 1

Which problem does the model represent?

Use the model to find the product.

• 4/15

• 4/8

• 1/2

• 4/5

What problem is represented by the model?

• x 3/10

• 3/5 x 9/50

• 3/5 x 3/10

• 2/5 x 3/5

Which product is represented by the model?

• 2/3 of 3/4

• 6/12 of 2/3

• 1/2 of 3/4

• 1/12 of 2/3