Question

Calculeaza respectand ordinea regulilor invatate a) 100 -20 : (35 - 4 × 8 ) = b) [( 608+80 : 2 ) × 5 - 55 × 3 ] ×2 = c) ( 912 + 164 : 2 ) - 7 × 135 = d) 4 × [100 : 5 + ( 175 : 5 - 50 ) ] + 303 : 3 =

Answer 1

a)
100 -20 : (35 - 4 × 8 ) =
100 -20 : (35 - 32 ) =
100 -20 : 3 =
100 - 6.66 (aprox)=
93.34 (aprox)

b)
[( 608+80 : 2 ) × 5 - 55 × 3 ] ×2 =
[( 608+40 ) × 5 - 165 ] ×2 =
( 648 × 5 - 165 ) ×2 =
(3240-165 ) × 2 =
3075 × 2 =
6150


c)
( 912 + 164 : 2 ) - 7 × 135 =
( 912 + 82 ) - 945 =
994 -945 =
49

d)
4 × [100 : 5 + ( 175 : 5 - 50 ) ] + 303 : 3 =
4 × [20 + ( 35 - 50 ) ] + 101 =
4 × (20 -15 ) + 101 =
4 × 5 + 101 =
20 + 101 =
121