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⚠️ This adapted Mathematics activity was designed to teach Subtraction of Decimal Numbers to students who are in the process of learning to read and write, using everyday situations, worked examples, and structured calculations.
5 adapted questions + complete answer key, distributed across 2 activity pages, with an introductory visual summary and a worked example.
The sequence begins by identifying how much money remains after a purchase, progresses to vertically arranged subtraction problems involving decimal numbers, and concludes with situations involving differences between monetary values and horizontally arranged calculations.
Especially suitable for students who are in the process of learning to read and write, and can be used in Elementary School, Middle School, and High School, depending on the student's curricular adaptation needs.
It may be particularly helpful for students with:
Mild to moderate Intellectual Disabilities who can already recognize numbers and perform simple subtraction but need visual support and concrete examples.
Dyscalculia who may benefit from structured operations and visual references to understand mathematical procedures.
Significant reading and writing difficulties who need clear instructions and reduced writing demands.
Attention and mathematical organization difficulties who need structured activities and step-by-step guidance.
The material can also support Mathematics and Specialized Educational Support (AEE) teachers.
Ready-to-print PDF containing:
🔹 5 adapted questions and a complete answer key; 🔹 2 activity pages, including an introductory visual summary; 🔹 illustrated explanation of decimal subtraction; 🔹 worked example using monetary values; 🔹 images of money, school supplies, and everyday products; 🔹 word problems involving shopping and spending; 🔹 vertically and horizontally arranged calculations; 🔹 multiple-choice questions with 4 answer choices; 🔹 spaces to complete numerical results; 🔹 versions with standard lettering and UPPERCASE lettering; 🔹 black-and-white version; 🔹 BNCC-related skills.
⏱️ Save approximately 2 hours and 32 minutes of preparation time! The material is already adapted, illustrated, formatted, and accompanied by a complete answer key, reducing the time needed to develop questions, organize calculations, and prepare visual resources.
Subtraction and money: Identifying how much money remains after spending R$ 4.00 from a total of R$ 10.00.
Vertical subtraction: Calculating 7.00 − 2.00 using monetary values without cents.
Subtraction involving cents: Solving 7.80 − 2.30 while practicing decimal place alignment.
Difference between prices: Calculating how much more money is needed to buy a backpack priced at R$ 8.50 when only R$ 6.50 is available.
Horizontal subtraction: Solving 5.50 − 2.00 by completing the calculation and identifying the result.
The introductory summary explains that subtraction means taking one quantity away from another, using an illustrated situation in which a person has R$ 8.00, spends R$ 2.00, and has R$ 6.00 remaining.
The activity follows a progressive learning sequence, beginning with concrete situations and gradually introducing operations involving decimal numbers.
In the first question, students observe a situation in which Ana has R$ 10.00 and spends R$ 4.00. The task is to identify how much money remains using illustrations and a partially structured calculation.
In the second question, students solve 7.00 − 2.00, presented vertically, and select the correct result from four answer choices.
In the third question, students calculate 7.80 − 2.30, progressing to an operation involving reais and cents. The vertical arrangement helps students observe the alignment of decimal places.
In the fourth question, students analyze a shopping situation: a backpack costs R$ 8.50, but Lucas has only R$ 6.50. Students calculate how much more money is needed to make the purchase, connecting subtraction to an everyday need.
In the fifth question, students solve 5.50 − 2.00 horizontally, complete the calculation, and select the corresponding answer choice.
The introductory visual summary can be consulted while completing the questions. For students who experience greater difficulties, teachers may also use play money or hands-on materials to represent the monetary values.
✅ Introductory visual summary: Explanation and worked example of subtraction.
✅ Functional Mathematics: Everyday situations involving money, shopping, and price comparisons.
✅ Progressive learning: From simple subtraction to operations involving cents.
✅ Structured calculations: Vertically and horizontally arranged subtraction problems.
✅ Reduced writing demands: Answers selected by marking and completing numerical values.
✅ Accessibility: Available in UPPERCASE and black-and-white versions, with a complete answer key.
Brasil
Estados Unidos
