Question

a) 35.43 + 35.56 + 35                                b) 37.24 + 37.76 + 63.79 + 21.63

 

c) 1213 – [1250 – (4² – 2.3)³:4] – | 3 |       d) (2¹⁷ + 15³).(3⁴⁵ – 6⁵).(2⁴ – 4²)

Answer 1

a)\(35.43+35.56+35\)
\(=35.\left(43+56+1\right)\)
\(=35.100\)
\(=3500\)
b)\(37.24+37.76+63.79+21.63\)
\(=37.\left(24+76\right)+63.\left(79+21\right)\)
\(=37.100+63.100\)
\(=100.\left(37+63\right)\)
\(=100.100\)
\(=10000\)

Answer 2

\(a,35.43+35.56+35=35.\left(43+56+1\right)=35.100=3500\)

\(b,37.24+37.76+63.7+21.63=37.\left(24+76\right)+63.\left(79+21\right)=37.100+63.100\)

\(=100.\left(37+63\right)=100.100=10000\)

\(c,1213-\left[1250-\left(4^2-2.3\right)^3:4\right]-\left|3\right|=1213-\left[1250-\left(16-6\right)^3:4\right]-3\)

\(=1213-\left[1250-10^3:4\right]-3=1213-\left[1250-250\right]-3\)

\(=1213-1000-3=213-3=210\)

\(d,\left(2^{17}+15^3\right).\left(3^{45}-6^5\right).\left(2^4-4^2\right)=\left(2^{17}+15^3\right).\left(3^{45}-6^5\right).\left[4^4-\left(2.2\right)^2\right]\)

\(=\left(2^{17}+15^3\right).\left(3^{45}-6^5\right).\left[2^4-2^2.2^2\right]=\left(2^{17}+15^3\right).\left(3^{45}-6^5\right).0=0\)

Answer 3