Page 126 - Demo

Arrow-Puffin-3_Semester-1 Maths 125SUBTRACTION OF A 2, 3 AND 4-DIGIT NUMBER FROM A 4-DIGIT NUMBER (WITH BORROWING)Example 1: Subtract 28 from 3875.%u2022 Subtract the ones column.%u2022 Start subtracting from ones column. 5 < 8 so, 8 cannot be subtracted from 5.%u2022 Borrow 1 ten from tens place. 1 ten = 10 ones 10 ones + 5 ones = 15 ones 15 ones %u2013 8 ones = 7 ones%u2022 Subtract the tens column.%u2022 At tens place, we are left with 6 tens. 6 > 2%u0009 %u0009 6 tens %u2013 2 tens = 4 tens%u2022 Since there is nothing to subtract in hundreds and thousands column, write 8 hundreds as it is in hundreds place and 3 thousands as it is in thousands place.Hence, 3875 %u2013 28 = 3847Example 2: Subtract 435 from 2314.%u2022 Subtract the ones column.%u2022 4 < 5 so, we cannot subtract 5 from 4.%u2022 Borrow 1 ten from tens place. 1 ten = 10 ones 10 ones + 4 ones = 14 ones 14 ones %u2013 5 ones = 9 ones10. Th H T O7 3 2 7%u2013 3 1 1 511. Th H T O5 4 3 2%u2013 4 2 0 112. Th H T O4 2 2 6%u2013 2 1 1 5Th H T O3 8 7 5%u2013 2 83 8 4 76 15Let's Understand Conceptual Understanding