Evaluate Using Properties : 284 X 12 – 284 X 2 - Mathematics

Evaluate using properties :
284 x 12 – 284 x 2

योग

284 x 12-284 x 2
= 284 x (12-2) (using distributivity)
= 284 x 10 = 2840

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अध्याय 5: Natural Numbers and Whole Numbers (Including Patterns) - Exercise 5 (C)

अध्याय 5 Natural Numbers and Whole Numbers (Including Patterns)
Exercise 5 (C) | Q 5.2

Fill in the blank:
Largest natural number is _________

Fill in the blank:
54 + 234 = 234 + ______

Is a + b + c = a + (b + c) = (b + a) + c ?

Which property of addition is satisfied by :
(7 + 6) x 10 = 7 x 10 + 6 x 10

Fill in the blanks :
83 x 54 + 83 x 16 = 83 x ( _______ ) = 83 x ______ = _________.

Fill in the blanks :
98 x 273 – 75 x 273 = ( _____ ) x 273 =_____ x 273

Solve:

1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987

In each of the following patterns, construct next figure.
In each case, if n denotes the number of figure and F denotes the number of matchsticks used, find F in terms of n.
Also find, in each case, how many matches are required to make the: 16th figure and 30th figure.