Find the Unknown Numbers

On Iqleel, Grade 1 students will learn to find unknown numbers in addition and subtraction equations. They will determine the missing numbers, whether at the start, middle, or end, to make the equation true. This skill strengthens algebraic reasoning by helping students understand how three numbers relate to each other.

• Algebra and Equations
• Expressions & Equations
• Unknown
• Subtraction
• Equal Sign
• Equation
• Equality
• Missing Numbers
• Equal
• Addition
• Whole Numbers

• 1.OA.D.8 — Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = □ – 3, 6 + 6 = □.
• AC9M1N04 — add and subtract numbers within 20, using physical and virtual materials, part-part-whole knowledge to 10 and a variety of calculation strategies
• ENG-MATH-Y1-AS.4 — Solve one-step problems that involve addition and subtraction, using concrete objects and pictorial representations, and missing number problems such as 7 = ? − 9.
• NY-1.OA.8
• ZA.CAPS.MATH.G1.NOR.1.13

• Identify True or False Equations
• Add and Subtract with Facts (up to 10)