Question

56 x 39 = 56 x 30 + 56---------
37 x 19 = 37 x 10+ 37 x 5 + 37 x------------
18 x 47 = 18 × 50 - 18x----------
76 x 88 = 76 x 90 - 76 x--------

can someone explain me with answers .​

Answer 1

$\huge\mathfrak\blue {Question}$

56 x 39 = 56 x 30 + 56---------

37 x 19 = 37 x 10+ 37 x 5 + 37 x------------

18 x 47 = 18 × 50 - 18x----------

76 x 88 = 76 x 90 - 76 x--------

$\huge\mathfrak\pink {Solution}$

1. 56 x 39 = 56 x 30 + 56---------

if we seperate 39 then we can write 30 + 9 Thus we get,

56 × 39 = 56 × 30 + 56 × 9

2. 37 x 19 = 37 x 10+ 37 x 5 + 37 x------------

if we seperate 19 then we can write 10 + 5 + 4 Thus we get,

37 × 19 = 37 × 10 + 37 × 5 + 37 × 4

3. 18 x 47 = 18 × 50 - 18x----------

if we seperate 47 then we can write 50 - 3 Thus we get,

18 × 47 = 18 × 50 - 18 × 3

4. 76 x 88 = 76 x 90 - 76 x--------

if we seperate 88 then we can write 90 - 2 Thus we get,

76 × 88 = 76 × 90 - 76 × 2

Answer 2

Step-by-step explanation:

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