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In this lesson, we will learn how to make numbers to 20 in multiple ways and check whether two expressions equal the same number.

Q1:

Which of the following is equal to 9 − 5 ?

Q2:

Are these two expressions equal?

Q3:

Which equation is wrong?

Q4:

Q5:

Which subtraction sentence is equal to 8 + 5?

Q6:

Which of these is NOT equal to 9?

Q7:

Q8:

Which of these is not equal to 11?

Q9:

Find the missing number.

Q10:

Am I using the equal sign correctly? Check if the two sums are equal.

Q11:

Am I using the equal sign correctly?

Check if the two sums are equal.

Q12:

Am I using the equal sign correctly? Check if the two sums are equal: 3 + 6 = 4 + 5 .

Q13:

Q14:

The figure shows five expressions.

Which expressions are equal to the same number?

Use the equal sign to write an equation using the two equal expressions.

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