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Number Trail Grade 5 / Week 06 / Friday
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Week 06 · Expressions

Friday

Freddy's expression game
// Parentheses first, and expressions in words
⏱ about 15 min

Friday: Freddy's expression game

Freddy the Frog hops onto a big lily pad covered in number cards.

"Ribbit! Welcome to the expression game," he says, tugging his bow tie.

"Some cards have parentheses. Some have words. Some ask you to compare without calculating."

Oliver adjusts his glasses. "Remember, work inside the groups first."

Bennie nods. "And the words tell us the order of the steps."

Freddy grins. "Then hop to it, friends!"

Game 1: Evaluate

FIND THE VALUE
  • Read the question.
  • Tap your answer.
(12 + 8) ÷ 4 = ?
6 × (9 - 4) = ?
45 - 5 × 6 = ?
3 × (2 + (6 × 4)) = ?

Game 2: Words and expressions

PICK THE EXPRESSION
  • Read the question.
  • Tap your answer.
Subtract 3 from 11, then multiply by 5.
Divide 24 by 6, then add 7.
Multiply 3 by the difference of 10 and 4.
What does 4 × (7 + 3) mean?

Game 3: Compare without calculating

WHICH SIGN FITS?
  • Read the question.
  • Tap your answer.
8 × (2,316 + 47) ? 2,316 + 47
(735 + 65) ÷ 4 ? 735 + 65
9 × (128 - 19) ? (128 - 19) × 9
Compare 10 × (3,450 + 8) with 3,450 + 8. Without calculating, the first is...

Game 4: Earlier weeks

REMEMBER THESE?
  • Read the question.
  • Tap your answer.
(1.5 + 2.5) × 3 = ?
2.4 + 1.6 × 2 = ?
0.6 × 0.5 = ?
4.5 ÷ 0.9 = ?
ORDER BY VALUE
  • Use your answers from Game 1.
  • Put the expressions from least to greatest value.
11st
22nd
33rd
44th

Game 5: True or false?

SentenceTrue or false?
(12 + 8) ÷ 4 = 5?
45 - 5 × 6 = 240?
3 × (2 + (6 × 4)) = 78?
8 × (2,316 + 47) is 8 times as large as 2,316 + 47.?
WHY THIS EXERCISE45 - 5 × 6 is 15, because we multiply 5 × 6 before we subtract.
Try it
Hop like Freddy 3 times, then 2 more times. Do that 4 times in all.
Write an expression for all your hops, like 4 × (3 + 2).
Count your hops to check the value.

Ribbit! Tomorrow is a Number Hunt for expressions.

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