Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 49 - Touchpad Mathematics_Ver1.0_C4
P. 49

    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_03\Chap_03
                     \ 10-Nov-2025  Bharat Arora   Proof-8                                    Reader’s Sign _______________________ Date __________

                                Exercise 3B

                        1.  Find the product.

                           a.       3 4 6                  b.       2 7 6                  c.      4 3 5
                                 ×         4                     ×        3                     ×         6

                           d.       5 0 4                  e.       1 3 2 4                f.      2 0 4 3
                                 ×         9                     ×            2                 ×             2

                           g.       1 7 0 5                h.      2 2 4 3
                                 ×            5                  ×           4

                       2.  Multiply using the box multiplication method.

                           a.  214 × 3     =  _______      b.  255 × 4     =  _______      c.  216 × 4    =  _______

                           d.  6271 × 6  =  _______        e.  1635 × 8  =  _______        f.  5873 × 2  =  _______

                           g.  2648 × 7 = _______          h.  547 × 9     =  _______      i.  4027 × 8  =  _______

                    MulTiPliCATion By 2-DiGiT nuMBErS

                    Multiplying by a 2-Digit number Ending with 0

                    Look at the following examples and observe their results.

                      a.  145 × 10 = 1450

                      b.  2367 × 10 = 23670

                      c.  72 × 20 = 72 × (2 × 10) = (72 × 2) × 10 = 144 × 10 = 1440
                      d.  304 × 30 = 304 × (3 × 10) = (304 × 3) × 10 = 912 × 10 = 9120

                      e.  2146 × 40 = 2146 × (4 × 10) = (2146 × 4) × 10 = 8584 × 10 = 85840

                    To multiply a number by a 2-digit number ending with 0, we write a 0 in the ones
                    place and multiply the number by the digit in the tens place.

                                                                                                                  47
                                                                                                 Multiplication

| 44 45 46 47 48 49 50 51 52 53 54 |