enVision Mathematics Grade 1, Topic 5: Work with Addition and Subtraction Equations
In this unit, first graders learn that the equal sign means "the same amount as," not "the answer comes next." They decide whether equations like 6 + 2 = 4 + 4 are true or false and find the unknown, the missing number, in sentences like 8 + ? = 11. It builds on the subtraction facts of the last unit and comes before collecting and reading data next.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Topic 5?
- Checking whether both sides of an equation match, so 6 + 2 = 4 + 4 is true and 5 = 3 + 3 is false. Learn more: What the equal sign really means
- Finding the unknown number anywhere in an equation, like 8 + ? = 11 or 5 = ? - 3, by thinking about how the numbers relate. Learn more: Missing numbers, like 8 + ? = 11
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
Is 3 + 4 = 7 true or false?
- True
- False
- Maybe
How you can help
- Balance it out with two plates and some crackers: put 6 and 2 on one plate and 4 and 4 on the other. Ask whether both plates hold the same amount.
- Write a missing-number puzzle on a sticky note, like 9 + ? = 14, and leave it on the fridge. Ask your child to explain how they found it.
- Say a number sentence aloud while walking, like "7 equals 3 plus 4," and ask "true or false?" Mix in some that start with the answer.
Where kids can get stuck
- Calling 7 = 8 - 1 false because the answer is on the left side.
- Writing 19 for 8 + ? = 11, adding the two numbers they can see.
- Filling in 3 + 5 = ? + 6 with 8 instead of 2, which makes both sides equal.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- equation
- A number sentence with an equal sign, like 5 + 3 = 8.
- equal sign
- The symbol = that means "the same amount as."
- both sides
- The two parts of an equation, one on each side of the equal sign.
- true
- An equation is true when both sides are the same amount.
- false
- An equation is false when the two sides are different amounts.
- unknown
- The number we don't know yet, shown with a box or question mark.
- check
- Make sure an answer works, like adding back after you subtract.
Want to help your child master the equal sign?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
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Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does enVision Mathematics Grade 1 Topic 5 cover?
enVision Mathematics Grade 1 Topic 5 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.