Homeschool Kindergarten Math: Teaching Subtraction

If addition felt like the fun milestone of combining piles, subtraction can feel like the trickier cousin. Taking things away doesn't come as naturally to a lot of kindergartners as putting things together, and that's worth planning around rather than rushing past.

We've found that subtraction goes smoothest when you treat it as its own distinct action, not just "addition backwards," even though the number sense underneath is related. Kids need to physically see and feel a group getting smaller before the abstract "minus" sign means much of anything.

Here's our approach to building subtraction skills in a kindergarten homeschool, from real objects all the way to written word problems.

What Kindergarten Subtraction Actually Covers

Subtract objects and subtract using pictures are the true starting point. A child counts out a group, physically removes some, and counts what remains. This concrete, hands-on version of subtraction should get more time than most parents initially expect.

Subtract within 5 keeps the numbers small enough that a child can track the whole process without losing count, which matters a lot when they're still building confidence with the concept itself. Subtract single digits extends this range gradually as a child's accuracy improves.

Add subtract objects and pictures, working on both operations together, helps kids see addition and subtraction as two sides of the same coin rather than entirely separate topics. Seeing "5 take away 2 leaves 3" right next to "3 plus 2 makes 5" builds real number relationships.

Subtract vertical and subtract vertical within 20, including the no-regrouping version, introduce the written, stacked format kids will use for the rest of elementary math. Subtraction facts and subtraction word problems round things out, building fluency with basic facts and applying subtraction to short story situations.

How to Teach It Step by Step

Step 1: Start with a group of real objects and physically remove some. Count out five crackers, take two away while your child watches, and ask "how many are left?" Let them recount to check.

Step 2: Introduce the words "subtract" and "minus" after the action feels familiar. Once the physical concept clicks, name it. "We had 5, we took away 2, that's subtracting."

Step 3: Move to pictures once objects feel solid. Worksheets that show a group of pictures with some crossed out are the natural next step, letting your child count what's left without needing physical objects in front of them.

Step 4: Practice subtract within 5 using written numbers. Once the concept transfers to pictures easily, introduce the same idea with just numbers and a minus sign, keeping the range small.

Step 5: Add vertical format and word problems once the concept is secure. Vertical subtraction teaches the stacked written format, and subtraction word problems ask your child to pull the "taking away" action out of a short story on their own.

Where Kids Usually Get Stuck

The most common trouble spot is kids who understand addition well but seem to "forget" everything when subtraction is introduced. This isn't really forgetting, it's that removing objects from a group requires a different kind of tracking than combining them, and that takes fresh practice to build.

Miscounting what's left is another frequent issue, especially when a child rushes the recount after removing objects. Slow this down deliberately: have your child touch and count each remaining object out loud rather than just glancing and guessing.

You'll know subtraction is really sinking in when your child can solve a simple problem like "4 minus 1" without needing objects or pictures in front of them, just from mental math, and when they can act out a subtraction word problem correctly using their fingers or nearby objects without being shown how first.

FAQ

Should I teach subtraction before or after addition in kindergarten? Addition first is the more common approach, since combining groups tends to feel more intuitive to young kids than taking away. That said, once your child has a solid grasp of addition, subtraction usually comes together fairly quickly because a lot of the underlying number sense transfers over.

How do I explain subtraction to a child who's never heard the word before? Skip the word at first and just show the action. Start with five blocks, take two away, and ask "how many are left?" Once your child understands the action, introduce "subtract" and "minus" as the words for what they just did.

What does "subtract within 5" mean and why start there? It means all subtraction problems use numbers no bigger than 5, like 5 minus 2 or 4 minus 1. Starting this small lets kids physically count and remove objects without losing track, which builds accuracy before you introduce bigger numbers.

My child gets addition but is confused by subtraction. Is that normal? Very normal. Taking away is a less intuitive action for a lot of young kids than combining groups, and reversing that thinking takes extra practice. Go back to physical objects and slow down the counting rather than moving to numbers on paper too soon.

Keep Reading

• Homeschool Kindergarten Math: Teaching Addition

Subtraction asks kids to think in reverse, and that's genuinely a bigger leap than it looks like from the outside. Give it the same patient, hands-on start you gave addition, and your kiddo will get there on their own timeline 😊