Page 1 : Subtraction, 4, Learning objectives, Subtract 3-digit numbers (without, and with regrouping), Learn properties of subtraction, Estimate the difference, Subtract 4-digit numbers (without, and with regrouping), Solve real-life problems on, subtraction, Check subtraction sum using, addition, Warm up, During summer vacations, Neha visited the botanical, garden with her parents. There she saw different, varieties of flowers., She started collecting information about them. She, came to know that there were 53 tulips. Also, the, total number of flowers was 65., What is the number of other types of flowers in the garden?, TO, 6 5, Remember, - Minuend, In subtraction, the, bigger number is calle, minuend. The number, to be subtracted is, 5 3 +Subtrahend, 1 2 Difference, To find out the answer, you did subtraction., Subtraction is taking away some objects or, numbers from a group., called subtrahend., We always subtract a smaller number from a bigger number. The answer, get after subtracting is called the difference.

Page 2 : SUBTRACTION OF 3-DIGIT NUMBERS, Subtraction of 3-digit numbers is similar to that subtraction of 2-digit numbers., Subtraction Without Regrouping, Example 1:, Subtract 145 from 367., Solution:, Step 1: Arrange the minuend and subtrahend in columns-Hundreds, Tens, and Ones. Do not forget to write the bigger number first., Step 2: Subtract the Ones., TO, 7 Ones - 5 Ones = 2 Ones, 9., Write 2 under the Ones column., 1, 4, Step 3: Subtract the Tens., 6 Tens - 4 Tens = 2 Tens, %3D, Write 2 under the Tens column., Step 4: Subtract the Hundreds., 3 Hundreds - 1 Hundred = 2 Hundreds, %3D, Write 2 under the Hundreds column., Thus, 367 - 145 = 222., Exercise 4.1, Subtract the following., 1., |0,, 2., TO, 3., TO, 7., 3 2, 7., 6., 1 8, 8, 1, 4, A 8, 9., 7 11, 3 4 3, 210, 131, 130, 7., 75, 2., 4., 90

Page 3 : 6. TO, 8. H, 7., 8., 6., 7., 8., 8., 8., 6., 9., 7., 8., 1., 323, 450, 6 2 2, 66, Subtraction With Regrouping, Example 2:, Subtract 246 from 913., Solution:, Step 1:, Arrange the minuend and subtrahend in columns-Hundreds, Tens, and Ones., Step 2: Subtract the Ones., 3 Ones < 6 Ones, 1., 3., So, regroup 913., 913 = 9 Hundreds + 1 Ten + 3 Ones, = 9 Hundreds + 10 Ones + 3 Ones, %3D, = 9 Hundreds + 13 Ones, %3D, 13, Now, subtract 6 Ones from 13 Ones., 13 Ones - 6 0nes = 7 Ones, 6., Write 7 under the Ones column., 7., Step 3: Subtract the Tens., O Tens < 4 Tens, 10, So, regroup 9 Hundreds., 80 13, 9 Hundreds = 8 Hundreds + 1 Hundred, 2, 6., =8 Hundreds + 10 Tens, %3D, 6., Teacher's Tip, ell the students to write the greater number on top and the smaller number below it while doing subtraction., 13, 7., T04, 47, 92, 5.

Page 4 : 44, 167, Now, subtract 4 Tens from 10 tens., 10 Tens, 4 Tens, 6 Tens, %3D, H., T., Write 6 under the Tens column., Step 4:, Subtract the Hundreds., 8 Hundreds - 2 Hundreds = 6 Hundreds, %3D, 2., Write 6 under the Hundreds column., 6., 6., Thus, 913 - 246 = 667., Exercise 4.2, 1. Subtract the following., a)HTO, b)HT0, c) HTO, d) HT, 6., 2 Y, 8., 2 2, 3, 6., 3, 9., 654, 486, 20, e) HTO, f), T O, g), h), 220, (3)15, 4, 3, 5., 4, 8, 2, 8., 6., 2 3, O 4 9, 27, HiW, Write the following in your notebook and subtract., H T, a) 89 from 123, b) 247 from 802, c) 176 from 290, d) 91 from 123, 8., -, e) 456 from 912, f) 714 from 980, g) 333 from 411, h) 540 from 615

Page 5 : 01 00, 12 Ones, 1 Ten + 2 Ones, Write 2 under the Ones column and take 1 to the Tens column., Step 3: Add the Tens., %3D, 1 Ten + 7 Tens + 1 Ten (carried over) = 9 Tens, Write 9 under the Tens column., Step 4: Add the Hundreds., 4 Hundreds + 5 Hundreds = 9 Hundreds, %3D, Write 9 under the Hundreds column., Thus, 418 +574 = 992., As the sum is equal to the minuend of the original subtraction sum, so our, subtraction is correct., Exercise 4.3, Subtract and check your ar.swer., Subtract, Check, Subtract, Check, 1., HTO, 2., 8 12, 9., 2, 4, 9., 2, + 3 8 5, 492, 1, + 20 5, 923, 7, 8., 205, 385, Subtract, Check, Subtract, Check, 3., TO, TO, 4., 16, 689, 152, 841, 3., 8., 4, 1, + 28, 236, 8., 9, | 2 8, 152, 34