Week-2 Lesson 3 Y5

Multiple Choice

Which of the following is a reason to use objects, symbols, or shapes in solving problems with unknown numbers?

• They make problems more visually engaging and easier to understand.

• They always give the correct answer without calculation.

• They replace the need for mathematical operations.

• They are only used in advanced mathematics.

Open Ended

Why is it important to understand addition and subtraction when working with unknown numbers?

Multiple Choice

What is the main purpose of using objects, shapes, or symbols in addition and subtraction problems with two unknown quantities?

• To make the problems look more interesting

• To represent unknown quantities visually

• To solve problems faster

• To avoid using numbers

Multiple Choice

Based on the information in slides 3 and 4, what do the yellow square and purple circle represent in the context of Daniel's purchases?

• The cost of a book and a mug

• The amount of money Daniel has left

• The total amount Daniel paid

• The number of items Daniel bought

Multiple Select

Which of the following steps are correct when solving for the cost of the book in Daniel's scenario?

• Subtract the cost of the mug from $20, then subtract $3

• Subtract $3 and $2 from $20

• Add the cost of the mug and the book to $20

• Subtract $3 from $20, then subtract the cost of the mug

Multiple Choice

What is the mass of one packet of flour if three packets together weigh 2.4 kg?

• 0.8 kg

• 1.2 kg

• 2.4 kg

• 0.6 kg

Multiple Choice

Which of the following are correct answers for the cost of each eraser and the price of each box of coloured pencils?

• Each eraser costs $2 and each box of coloured pencils is $10.

• Each eraser costs $1 and each box of coloured pencils is $20.

• Each eraser costs $2 and each box of coloured pencils is $20.

• Each eraser costs $1 and each box of coloured pencils is $10.

Open Ended

Explain how using objects, shapes, or symbols can help solve problems with two unknown quantities in addition and subtraction.

Open Ended

What did we learn today about using objects, shapes, or symbols to represent unknown quantities in addition and subtraction?

Open Ended

The topic of this lesson is about using objects, symbols, and shapes for two unknown numbers. Do you have any questions or would you like to know more about this topic?

Open Ended

What is one way you can use objects, symbols, or shapes to solve problems with two unknown numbers in addition and subtraction?