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Number Trail Grade 5 / Week 09 / Friday
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Week 09 · Fractions that resize

Friday

Freddy's scaling game
// Scaling, fraction stories and sharing with unit fractions
⏱ about 15 min

Friday: Freddy's scaling game

Freddy the Frog hops onto a lily pad wearing a bright green bow tie.

"Ribbit! Welcome to the scaling game," he says.

"Some lily pads stretch numbers, and some shrink them."

Rosie the Rabbit hops beside him. "And some keep them the same!"

Bennie the Bear holds up a slate with fractions on it.

"Remember our tricks," he says. "Compare with 1, multiply the parts, and share fairly."

Freddy grins. "Let us see what you know, trail friends!"

Game 1: Stretch or shrink?

STRETCH OR SHRINK?
  • Read the question.
  • Tap your answer.
Without multiplying: is 2/5 × 30 more than, less than or equal to 30?
Without multiplying: is 9/4 × 16 more than, less than or equal to 16?
Without multiplying: is 3/3 × 45 more than, less than or equal to 45?
Without multiplying: is 11/12 × 60 more than, less than or equal to 60?

Game 2: Multiply

FIND THE PRODUCT
  • Read the question.
  • Tap your answer.
3/8 × 16 = ?
2/3 × 4/5 = ?
1 3/4 × 8 = ?
1/4 × 2/3 = ?

Game 3: Divide

FIND THE QUOTIENT
  • Read the question.
  • Tap your answer.
1/3 ÷ 2 = ?
4 ÷ 1/3 = ?
1/6 ÷ 2 = ?
5 ÷ 1/4 = ?

Game 4: Earlier weeks

REMEMBER THESE?
  • Read the question.
  • Tap your answer.
1/2 + 1/3 = ?
3/4 - 1/6 = ?
2.4 × 3 = ?
ORDER THE VALUES
  • Find the value of each card.
  • Put them from least to greatest.
11st
22nd
33rd
44th
SentenceTrue or false?
3/8 × 16 = 6?
1/3 ÷ 2 = 1/6?
4 ÷ 1/3 = 7?
11/12 × 60 < 60?
WHY THIS EXERCISE4 ÷ 1/3 is 12, because each whole holds 3 thirds.
Try it
Hop like Freddy 12 times.
Now hop 3/4 as many times. How many hops is that?
Then hop 1 1/2 times as many as 12. How many hops now?

Ribbit! Tomorrow is a Number Hunt for fractions at home.

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