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Addition means putting two or more groups together to find the total. We show addition with the sign + and the answer with =. For example, if there are 2 apples on one plate and 3 apples on another, we join them to find how many apples there are altogether. Children can use toys, blocks or fingers to make the groups and then count all items one by one.
Begin by making small stories: "Riya has 2 pencils and she gets 3 more." Ask: How many now? Teach children to write small number sentences like 2 + 3 = 5. Use pictures so they see joining: draw two circles with items and then one big circle with the total. Encourage counting aloud slowly and pointing to each object. Practise joining with numbers up to 20 and remind students to write neat numerals. Use real objects for repeated practice so the idea of joining becomes clear and easy to remember.
Subtraction means taking away some items from a group to see how many are left. We write subtraction with the sign - and the answer with =. Children learn best when they see the action. For example, if there are 7 candies and you eat 2, you take 2 away and count the remaining 5 candies. Use real objects like stones, buttons or crackers. Put them in a line, remove the number the story says and then count what is left.
Begin with simple stories and always act them out. Say: "There are 6 birds on a tree. 2 fly away." Ask the child to show 6 objects, remove 2 and count the rest. Drawings also help: draw six circles, cross out two and count the remaining ones. Teach children to count backwards slowly and to use their fingers for small numbers. Practise several examples up to 20 so taking away becomes natural. Remind children that subtraction answers tell us either how many remain or how many were taken away, depending on the question. Use friendly prompts like 'left', 'gave' or 'lost' to show when to subtract. With steady practice, children will understand that subtraction is the opposite of joining.
A number sentence is a short way to show a story using numbers and signs. It uses + for add, - for subtract and = to show the answer. Changing a word problem into a number sentence helps children solve it without guessing. Teach simple steps to write a number sentence correctly.
Step 1: Read the story and find the numbers. Step 2: Circle the numbers and underline the action word. Step 3: Decide whether to add or subtract by looking for key words like 'altogether' or 'left'. Step 4: Put the correct sign between the numbers and write = followed by the answer. Show this with many short stories and pictures. For example, "Asha has 3 marbles and finds 4 more" becomes 3 + 4 = 7. Also practice subtraction stories like "She had 10 sweets and gave 4" which becomes 10 - 4 = 6. Teach children to write neatly and place each number clearly. When answers are found, write a check under the number sentence using the opposite operation. Encourage children to draw a quick picture beside the number sentence to help visual learners. Frequent practice helps them become faster and more confident at writing correct math statements from stories.
Solving stories with objects and pictures makes learning real and fun. When a child uses blocks, beads, coins or toy animals, they can move things and see the numbers change. For addition, place two groups of objects side by side and then push them together to count the total. For subtraction, start with the full group and take away the number the story tells. Counting the remaining objects gives the answer.
Drawings are useful when objects are not handy. Teach children to draw small pictures for each item — like small circles for apples or tiny stars for toys. They should draw first, then cross out or join pictures as the story says. Encourage clear, simple pictures so counting is easy. Use step-by-step acting: first show the start, then show the change, then count the result. Ask children to say each step aloud as they move objects or point to drawings. This helps link language and thinking to the numbers. Also practise recording the matching number sentence next to the objects or picture. Use different objects each day so children learn to work with many items. This approach builds strong understanding and makes children ready to solve written problems without objects later on.
Words in a story help decide whether we should add or subtract. Teach children to listen for these words and to circle them when reading a problem. Words that usually mean we must add include altogether, in all, total, more, got, received, added. Words that usually mean subtract are left, after, gave, lost, fewer, remain, took away. Knowing these words makes choosing the correct operation easier.
Use short example sentences and ask children to point to the key word and say the operation aloud. For example, in "There are 5 birds. 2 more come", the word 'more' shows addition. In "She had 8 sweets; she gave 3", the word 'gave' shows subtraction. Give children mixed practice cards where they must mark 'add' or 'take away' for each sentence, then write the number sentence and solve. Remind them that sometimes a story may need careful reading; when unsure, they should act out the scene with objects or draw it before deciding. Teach them that context is important: words usually guide the choice, but the picture or objects confirm it. Regular practice with varied sentences builds quick recognition and reduces mistakes in exams and classwork.
Checking work helps children find mistakes and become confident. A simple method is to do the opposite operation. If the child added to find an answer, they can subtract one addend from the total to see if they get the other addend. If they subtracted, they can add the remainder and the taken away number to see if they get the original number. This is easy and quick to teach.
Show many short examples and write the check under the answer. For example, after 4 + 3 = 7, write the check 7 - 3 = 4 or 7 - 4 = 3. After 10 - 4 = 6, check by 6 + 4 = 10. Also teach checking by recounting objects: move counters back to the original position and count again. Encourage children to always check one or two sums after a page of work to make it a habit. Explain that checking does not take long and often finds careless mistakes like wrong counting or wrong sign. In time, checking becomes natural and makes written tests and homework more accurate. Praise children when they check and correct an error themselves; this builds carefulness and confidence in maths.
Two-step stories have two actions and need two calculations done in order. Teach children to read the whole story first, then find the first action and do it. Use objects or drawings to show each action, and write each number sentence on a new line so the steps are clear.
For example, "Mira had 5 sweets. She got 3 more and then ate 2." The first step is to add: 5 + 3 = 8. The second step is to subtract: 8 - 2 = 6. Show this with counters: first join groups, then take some away. Remind children to use the result of step one as the starting number for step two. Use simple language: 'Do step one, then step two.' Give many short two-step problems with small numbers so children practise ordering and careful work. Encourage drawing two pictures — one after the first change and one after the second — to make the steps clear. Also teach checking after each step if time allows, by doing the opposite. Two-step practice helps build logical thinking and prepares children for slightly longer problems they will meet later in school.
Real life problems make maths useful and interesting. Use everyday scenes like buying sweets, sharing biscuits, counting toys or using rupee coins. When children solve such stories, they learn how addition and subtraction are used outside school. Use real coins or pictures of coins for money problems and real plates or boxes for sharing examples.
Begin with short, simple stories. For example: "You have 5 rupees and get 2 rupees more. How much do you have?" Write as 5 + 2 = 7 rupees. For subtraction: "There are 8 biscuits, we eat 3. How many are left?" Solve as 8 - 3 = 5. Let children act out the story with coins or biscuits, then write the number sentence. Use problems that children meet every day: pocket money, sweets, toys at home or birds in the garden. Ask children to say the steps aloud and check answers by doing the opposite or recounting. This practice builds number sense and shows why adding and taking away matter in daily life. Keep the numbers small and give praise for careful work to make learning positive and enjoyable.