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128 Arrow-Puffin-4_Semester-1 MathsSUBTRACTIONSubtraction is taking one number away from another.The number from which another number is subtracted is called the minuend.g Minuendg Subtrahendg Difference8 3%u2013 2 16 2Let's Understand Conceptual UnderstandingFind the key to unlock the front door. Write the correct answer in the boxes and on the lines in the key.To find the right key of the door, we have to figure out which key has the smallest sum.Circle the right key : A B CIII. Complete the following.a. 3,217 + 239 = 239 + b. 1,312 + = 1, 312c. 163 + 21 + = 163 + 21 + 35 d. 4,215 + = 4,216e. 100 + =200 + 100a. 4+ 1b. 55+c.3 25 6+d. 3 75 9+e. 41 7+f. 5 8+ 1 1g.4 58 5+h. 3 77 9+i.2 74 3+Aa ___b ___c ___+ ___Ba ___b ___c ___+ ___Ca ___b ___c ___+ ___Fun with Maths Art and Creativity