True Math Sentences Worksheet – 3rd Grade Addition & Basic Operations

Looking for simple, effective addition practice for third grade? The True Math Sentences Worksheet is a ready-to-print math resource that students can complete on their own after a short introduction.

Learning objective: Students will build accuracy and confidence with addition through short, focused practice that reinforces what was taught in class.

Why it works: Students stay on task because the directions are short and the practice is the right size for one sitting. Teachers save time because the page is ready to print and easy to check.

What's included:

• 1 printable worksheet page

• Clear, student-friendly directions

• 3 practice sections (Part A to Part C)

• Answer key (1 page)

• Cover page

How it's organized: The page opens with these directions: "Write a number in the box to make the number sentence true." The practice is split into 3 parts, so students can work through it in clear steps.

Grade level: Designed for third grade students. It also works well for second grade and fourth grade students who need extra practice or a fresh review.

How to use it: Use it for whole-group practice, small-group instruction, independent work, centers, morning work, homework, or an emergency sub plan.

Answer key: An answer key is included, so you can check work quickly or let students self-correct.

Teaching tips and variations:

• Model the first item together, then let students finish the rest independently.

• Slip the page into a sheet protector so students can practice again with dry-erase markers.

• Project the page and solve one or two items as a class before students work on their own.

Skills covered: Addition, Basic Operations, Multiplication, Subtraction, Math

Standards: Supports Common Core 3. NBT.A.2, 3. OA.C.7, 3. OA.A.1.

File type: PDF, ready to print.

Number of pages: 3 (1 worksheet page, 1 answer key page, 1 cover page).

Looking for more addition practice? Visit the Have Fun Teaching shop for related worksheets, reading passages, and activities for third grade. Have Fun Teaching on Teach Simple