1) a) 16+27+125+16=184
b) 2×9+5×16-3×16 = 18+80-48=98-48=50
2) a) 3¹⁹×3²⁵:3¹² = 3¹⁹+²⁵-¹²=3³²
b) (2⁴)⁵:2⁷×4³=2⁴×⁵-⁷×2⁶=2²⁰-⁷+⁶=2¹⁹
c) (5²×2)¹²:5²⁴+2⁸:4²-4⁵×2²=
=5²⁴×2¹²:5²⁴+2⁸:2⁴-2¹⁰×2²=
=5⁰×2¹²+2⁴-2⁸=
=1×2¹²+2⁴-2⁸=
=4096+16-256=
=3856
3. a) 3¹⁹×2⁶+3¹⁸×10+3²⁰×2²=
=3¹⁸(3×2⁶+10+3²×2²)
=3¹⁸(3×64+10+9×4)
=3¹⁸(192+10+36l
=3¹⁸×238
