Question

d)20-[6-4×(10-3²)+1]=

g)[4²+(5-3)³]:(9-7)³=

h)7²+2×[(3+1)²-4×7]=

i)25+{3³:9+[3²×5-3×(2³-5¹)]]=

Answer 1

D) 20- [6-4×( 1 )+1]
20- [ 3 ]
20 + 3 = 23

G) [ 16 +(2)³] ÷ 2³
[ 16 + 8 ] ÷ 8
24 ÷ 8 = 3

H) 49 + 2×[(4)² - 28]
49 + 2× [16 -28]
49 + 2× -12
49 -24
25

I) 25+{27:9+[9×5-3×(8-5)]}
25+{3+[45-3×3]}
25+{3+36}
25 + 39 = 64