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134 Arrow-Puffin-4_Semester-1 MathsSUBTRACTION - INVERSE OF ADDITIONAddition and subtraction are inverse operations. It means subtraction is the opposite of addition. We can subtract and then add to check the answer.Example : Th H T O3 11 174 2 7 82 5 8 71 6 9 1 Minuend Subtrahend DifferenceNow, add the difference to the smaller number. You get the sum as the bigger number.Th H T O1 11 6 9 12 5 8 74 2 7 8+ Difference Smaller number (subtrahend) Bigger number (minuend)Subtract and then add to check your answer.a. 74,427 61,385 b. 7,052 2,397 c. 45,321 39,801d. 86,003 53,112 e. 25,162 12,085COMBINED OPERATIONS OF ADDITION AND SUBTRACTIONWhenever addition and subtraction are given together in an expression, we first add and then subtract.But while solving the statement problems, you must follow the sequence i.e. if you need to subtract first, then first subtract and then add.Example : Simplify 468 235 + 618.Rearrange the expression as 468 + 618 235.Step 1 : Th H T O14 6 86 1 81 0 8 6+Step 2 : Th H T O1 0 8 62 3 58 5 1Therefore, 468 + 618 235 = 851 Let's Practise 3.12 ApplicationLet's Understand Conceptual UnderstandingLet's Understand Conceptual Understanding