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Q.1) Find the sum of the following. 
a.) 17 + 13 = ___ 
b.) 24 + 16 = ___ 
c.) 73 + 18 = ___ 
 
Q.2) Subtract the following.  
a.           54                                
-  28 
______                                    
            ______ 
    b.              19 
   -    14 
       ______ 
           ______ 
 
Q.3) State true or false. 
a.) 25 + 25 = 50 
b.) 66 + 66 = 122 
 
Q.4) Answer the following: 
    (a) 16 x 100 = ______ 
 
    (b) 45 x 10 = _____ 
 
Q.5) Solve. 
a.)  28 
+    12 
   ---------- 
   ---------- 
 
b.) 96 
    -14 
    ------- 
    ------- 
  
 
 
            
 
Page 2


 
                                      
 
 
 
 
 
Q.1) Find the sum of the following. 
a.) 17 + 13 = ___ 
b.) 24 + 16 = ___ 
c.) 73 + 18 = ___ 
 
Q.2) Subtract the following.  
a.           54                                
-  28 
______                                    
            ______ 
    b.              19 
   -    14 
       ______ 
           ______ 
 
Q.3) State true or false. 
a.) 25 + 25 = 50 
b.) 66 + 66 = 122 
 
Q.4) Answer the following: 
    (a) 16 x 100 = ______ 
 
    (b) 45 x 10 = _____ 
 
Q.5) Solve. 
a.)  28 
+    12 
   ---------- 
   ---------- 
 
b.) 96 
    -14 
    ------- 
    ------- 
  
 
 
            
 
 
                                      
 
 
Q.6) There were 24 apples in a fruit basket. Eva bought 38 
more and kept it in the basket. How many apples are there 
now?  
 
 
  
Q.7) Solve the multiplication.  
 
 
Q.8) Multiply 101 by the largest 2-digit number 
 
Q.9) Add the money and write the total amount in dollars. 
a.) $21 + $79 = ___ 
b.) $29 + $28 = ___ 
 
Q.10) Match the following. 
  
a.) 79 - 14 i.) 54 
b.) 39 + 15 ii.) 65 
c.) 59 + 16 iii.) 75 
 
   
 
 
 
 
 
Page 3


 
                                      
 
 
 
 
 
Q.1) Find the sum of the following. 
a.) 17 + 13 = ___ 
b.) 24 + 16 = ___ 
c.) 73 + 18 = ___ 
 
Q.2) Subtract the following.  
a.           54                                
-  28 
______                                    
            ______ 
    b.              19 
   -    14 
       ______ 
           ______ 
 
Q.3) State true or false. 
a.) 25 + 25 = 50 
b.) 66 + 66 = 122 
 
Q.4) Answer the following: 
    (a) 16 x 100 = ______ 
 
    (b) 45 x 10 = _____ 
 
Q.5) Solve. 
a.)  28 
+    12 
   ---------- 
   ---------- 
 
b.) 96 
    -14 
    ------- 
    ------- 
  
 
 
            
 
 
                                      
 
 
Q.6) There were 24 apples in a fruit basket. Eva bought 38 
more and kept it in the basket. How many apples are there 
now?  
 
 
  
Q.7) Solve the multiplication.  
 
 
Q.8) Multiply 101 by the largest 2-digit number 
 
Q.9) Add the money and write the total amount in dollars. 
a.) $21 + $79 = ___ 
b.) $29 + $28 = ___ 
 
Q.10) Match the following. 
  
a.) 79 - 14 i.) 54 
b.) 39 + 15 ii.) 65 
c.) 59 + 16 iii.) 75 
 
   
 
 
 
 
 
 
                                      
 
 
 
 
 
Q.1) a.) 30 
b.) 40 
c.) 91 
Q.2) a.) 26   
b.) 5 
Q.3) a.) True 
b.) False 
Q.4) a.) 1600 
b.) 450 
Q.5) a.) 40 
b.) 82 
 
Q.6) 62 apples 
Q.7) 4214 
Q.8) 101 x 99 = 9999 
Q.9) a.) $100 
b.) $57 
Q.10) a-ii  
b-i 
c-iii 
 
 
 
 
 
 
 
 
 
 
Page 4


 
                                      
 
 
 
 
 
Q.1) Find the sum of the following. 
a.) 17 + 13 = ___ 
b.) 24 + 16 = ___ 
c.) 73 + 18 = ___ 
 
Q.2) Subtract the following.  
a.           54                                
-  28 
______                                    
            ______ 
    b.              19 
   -    14 
       ______ 
           ______ 
 
Q.3) State true or false. 
a.) 25 + 25 = 50 
b.) 66 + 66 = 122 
 
Q.4) Answer the following: 
    (a) 16 x 100 = ______ 
 
    (b) 45 x 10 = _____ 
 
Q.5) Solve. 
a.)  28 
+    12 
   ---------- 
   ---------- 
 
b.) 96 
    -14 
    ------- 
    ------- 
  
 
 
            
 
 
                                      
 
 
Q.6) There were 24 apples in a fruit basket. Eva bought 38 
more and kept it in the basket. How many apples are there 
now?  
 
 
  
Q.7) Solve the multiplication.  
 
 
Q.8) Multiply 101 by the largest 2-digit number 
 
Q.9) Add the money and write the total amount in dollars. 
a.) $21 + $79 = ___ 
b.) $29 + $28 = ___ 
 
Q.10) Match the following. 
  
a.) 79 - 14 i.) 54 
b.) 39 + 15 ii.) 65 
c.) 59 + 16 iii.) 75 
 
   
 
 
 
 
 
 
                                      
 
 
 
 
 
Q.1) a.) 30 
b.) 40 
c.) 91 
Q.2) a.) 26   
b.) 5 
Q.3) a.) True 
b.) False 
Q.4) a.) 1600 
b.) 450 
Q.5) a.) 40 
b.) 82 
 
Q.6) 62 apples 
Q.7) 4214 
Q.8) 101 x 99 = 9999 
Q.9) a.) $100 
b.) $57 
Q.10) a-ii  
b-i 
c-iii 
 
 
 
 
 
 
 
 
 
 
 
                                      
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. Regrouping is another word for 
‘carry over’ in addition and 
‘borrowing’ in subtraction. 
2. Do you know that when we subtract 
0 from any number, the difference is 
the number itself? For example, 17 - 0 
= 17. 
3. When 1 is added to any number you 
get the next number, or the 
successor. For example, 36 + 1 = 37. 
Read More
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FAQs on Double Digit Worksheet- 1 - Mental Maths - Class 1

1. What are double-digit numbers?
Double-digit numbers are numbers that have two digits, ranging from 10 to 99. They are formed by combining a tens digit and a ones digit. Examples of double-digit numbers include 15, 37, and 89.
2. How do you add double-digit numbers?
To add double-digit numbers, align the numbers vertically, with the ones digits in the same column and the tens digits in the same column. Add the ones digits first, and if the sum is greater than 9, carry over the tens digit to the tens column. Then, add the tens digits. Finally, combine the tens and ones digits to get the sum.
3. How do you subtract double-digit numbers?
To subtract double-digit numbers, align the numbers vertically, with the ones digits in the same column and the tens digits in the same column. Start by subtracting the ones digits, and if the top number is smaller than the bottom number, borrow a ten from the tens column. Subtract the tens digits and combine the result with the difference of the ones digits.
4. How do you multiply double-digit numbers?
To multiply double-digit numbers, use the traditional long multiplication method. Multiply the ones digit of the bottom number by the top number, then multiply the tens digit of the bottom number by the top number. Add the two products together, making sure to align them correctly, to get the final result.
5. How do you divide double-digit numbers?
To divide double-digit numbers, use the traditional long division method. Start by dividing the tens digit of the dividend by the divisor. If the result is a whole number, write it above the line. Then, multiply the divisor by the whole number and subtract it from the tens digit of the dividend. Bring down the ones digit and repeat the process until there are no more digits to bring down.
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