Make Both Sides Equal, Addition

Before handing out the worksheet, briefly introduce the concept with a short oral warm-up or a visual model on the board. Let students work through the first item together as a class, then finish the rest independently or with a partner, encouraging them to talk through their thinking: "What strategy are you using? How do you know that is right?" After completing the worksheet, review any missed problems together and discuss the reasoning rather than just the answer. For extra support, let students use manipulatives or draw pictures alongside the written problems. These addition sentences worksheets work well as daily practice, homework, or a focused review activity.

Fill the blank so both sides of an addition equation are equal, within 20. An equation has an equal sign (=). Both sides of the equal sign must have the same amount. The directions on the page read: Find the number that makes both sides equal. Then, write it in the box. The answer key shows every answer.

Yes, both. We made it for 1st Grade addition, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with addition sentences. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

An addition sentence is a complete math equation written with numbers and symbols, such as 4 + 3 = 7. First graders learn to translate pictures, stories, and objects into addition sentences using the plus sign (+) and equals sign (=).

Writing and reading addition sentences introduces the concept of equality - the equals sign means 'the same as,' not just 'the answer.' Understanding this early helps prevent the common misconception that the equals sign is only an instruction to compute.

Draw simple pictures - 3 apples on one side, 2 on the other - and ask your child to write the addition sentence. You can also read a short word problem aloud and have them write the matching equation before solving it.

By the end of first grade, students should fluently add within 10 (CCSS 1.OA.C.6) and solve addition problems within 20 using strategies like counting on, making ten, and decomposing numbers. They should also add within 100 using place value understanding (1.NBT.C.4).

Start with adding a two-digit number and a one-digit number, then progress to two two-digit numbers. Use place value understanding: add the tens first, then the ones. Base-ten blocks and place value worksheets make this concrete before moving to abstract equations.

Key strategies include counting on from the larger number, making a ten (e.g., 8+5 becomes 8+2+3), using doubles (6+6=12) and near-doubles (6+7=6+6+1), and decomposing to known facts. Worksheets that practice each strategy separately help students build fluency.