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Determine if Equations Are True or False

Students will evaluate addition and subtraction equations to determine if they are true (both sides equal the same value) or false. Students work with equations in varied formats, including those with expressions on both sides.

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Determine if Equations Are True or False

Grade 1 · Equations and the Equal Sign · question 1 of 3

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12 rungs. A star at the top.

Dev sees 7 ducks at the pond. 3 more come. Which of these is true?

How it is taught

0:00 of 2:56

An equation is true when both sides match.

False means the two sides differ.

Read it: True or false?

Is 5 + 4 = 6 + 3 true? Work out each side: 5 + 4 = 9, and 6 + 3 = 9. Both sides make 9, so it is true.

  1. Work out the left side.
  2. Work out the right side.
  3. The same number on both sides is true. Different numbers is false.

The = sign means both sides are the same amount.

A balance stays level only when both sides weigh the same.

An equation can start with one number, like 8 = 3 + 4.

Work out both sides. True means they make the same number.

Calling 8 = 3 + 4 true because a sum comes after the = sign.

Work out 3 + 4: it is 7, not 8. So 8 = 3 + 4 is false.

Is 16 − 2 = 15 true or false? — false. 16 − 2 = 14, not 15, so it is false.

3 + 4 = 5 + 2

Let's find out if this equation is true or false. An equation is true when both sides are equal.

Here's our equation: three plus four equals five plus two. Is that true?

Think of the equal sign like a balance. Both sides have to weigh the same.

Let's look at the left side first. What is three plus four?

Three plus four is seven. Let's write that below.

Now the right side. What is five plus two?

Five plus two is also seven. Write that below too.

Both sides equal seven. Seven equals seven!

True or false?Both sides must be equal.Is this equation true?3+4=5+2left sideright side77=Same on both sides!ANSWERTRUEboth sides = 7
Grade 1 · Is the equation true or false?

So the equation is true. Great job checking both sides!

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
Climbing now
Divide within 100

An example student.

MayaGrade 3 · Mathematics

Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.

An example week.

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