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Back to Exercise: Interpret multiplication as scaling (resizing)

Exercises: Multiplication as Scaling

For most problems in this set, do NOT compute the exact product. Reason about the
size of the scale factor compared to 1, and use that to predict the direction of
the change.

Grade 5·22 problems·~27 min·Common Core Math - Grade 5·standard·5-nf-b-5
Work through problems with immediate feedback
A

Recall / Warm-Up

These problems review skills you already know.

1.

Is 53\frac{5}{3} greater than, less than, or equal to 1?

2.

On a number line with 6 marked, does 4×64 \times 6 stretch 6 to the right, shrink it to the left, or leave it in place?

3.

Fill in the equivalent fraction: 35=00000010\frac{3}{5} = \frac{\hspace{0.2em}\fbox{\phantom{000000}}\hspace{0.2em}}{10}

numerator:
B

Fluency Practice

1.

Without computing, is 5×385 \times \frac{3}{8} greater than, less than, or equal to 38\frac{3}{8}?

2.

Without computing, is 29×7\frac{2}{9} \times 7 greater than, less than, or equal to 7?

3.

Without computing, is 88×15\frac{8}{8} \times 15 greater than, less than, or equal to 15?

4.

Without computing, is 116×9\frac{11}{6} \times 9 greater than, less than, or equal to 9?

5.

Without computing, is 310×12\frac{3}{10} \times \frac{1}{2} greater than, less than, or equal to 12\frac{1}{2}?

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