Worksheet Solution: Addition and Subtraction Up to 20 - Notes | Study Mathematics for Class 1 - Class 1

Question 1: Add by counting forward. 

• = 8 
• = 9
• = 4
• = 8

Question 2: Add on the given number lines.

Question 3: Add vertically. 

• = 8
• = 10
• = 9
• = 7

Question 4: Fill in the blanks.

• 4 + 5 = 5 + 4 = 9   
• 8 +  1 = 1 +  8 = 9

Question 5: Add and write the sum.

• 0  + 4  = 4
• 6 + 0 = 6
• 7 + 0 = 7

Question 6: Add the fruits.

• 
  10 apples and 6 apples are 16 apples.
  
• 
  10 kiwis and 5 kiwis are 15 kiwis.
  

Question 7: Add to ten. 

Question 8: Add the following on the number line.

Question 9: Add the numbers on petals. Write your answer in the circle. 

• = 16
• = 10

Question 10: Find the answer for the following addition situations.

(a) The jewellery shop in a shopping mall has 13 silver bracelets and 4 gold bracelets. How many bracelets are there in all in the shop?
 

(b) On the Earth’s Day, Nira planted 6 plants and Harit planted 7 plants. Find the total number of plants that both Nira and Harit planted.

Question 11: Fill in the circles with the correct number. 

Question 12: Subtract the ones first to find the difference. 

• = 
• = 

Question 13: Subtract each of the following using the given number lines.

Question 14: Solve the following subtraction problems.

(a) Ms Prachi is fond of handbags. She owns 14 handbags. 4 of those are of black colour. How many of  them are other than black?

(b) Kanika has a collection of 18 story books. She gave few to her friend. She is left with 5 story books now. How many story books did she give to her friend?
 

Question 15: Start with the bigger number and count backward to subtract the following.

• = 3
• = 1
• = 4