Given Expression = 7 + 7 ÷ 7 x 7
= 7 + 7 x (1/7) x 7
= 7 + 7
= 14
Given Expression = 3120 ÷ 26 + 13 x 30
= 120 + 13 x 30
= 120 + 390
= 510
Given expression = (20 ÷ 5) ÷ 2 + (16 ÷ 8) x 2 + (10 ÷ 5) x (3 ÷ 2)
= (4 / 2) + (2 x 2) + 2 x (3 / 2)
= 2 + 4 + 3
= 9
Given expression = 8 ÷ 4 (3 - 2) x 4 + 3 - 7
= 8 x (1/4) x 1 x 4 + 3 - 7
= 8 + 3 - 7
= 4
Given Exp. = 0.5 x 0.5 + 0.5 ÷ 5
= 0.25 + 0.1
= 0.35
Given expression = 4 - 3.6 ÷ 4 + 0.2 x 0.5
= 4 - 0.9 + 0.1
= 3.2
Given expression = 5005 - 5000 ÷ 10.00
= 5005 - 500
= 4505
Given expression = 171 ÷ 19 x 9
= 171 / 19 x 9
= 9 x 9
= 81
Given expression = 108 ÷ 36 of 1/3 + 2/5 + 33/4
= 108 / 12 + 2 / 5 x 15 / 4
= 9 + 3 / 2
= 21 / 2
= 101/2
Given expression = 8/5 - 2/3 x 13/12 + 7/5 x 1/3
= 8/5 - 13/18 + 7/15
= (144 - 65 + 42) / 90
= 121/90
Let 13/4 + 25/6 + N + 1/4 = 10, then
N = 10 - (13/4 + 25/6 + 1/4)
= 10 - (39 + 50 + 3)/12
= 10 - 92/12
= 7/3
= 21/3
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