6.EE.A.1 math practice. Learn by doing.

$2^{3} = 2 \cdot 2 \cdot 2 = 8\textsf{.}$

The base $5$ appears $5$ times as a factor, so $5 \times 5 \times 5 \times 5 \times 5 = 5^{5}$.

Multiply first: $8 \cdot 7 = 56$. Then $9 + 56 - 4 = 61$.

$\,1^3 = 1 \cdot 1 \cdot 1 = 1$.

$2^{4} = 2 \cdot 2 \cdot 2 \cdot 2 = 16\textsf{.}$

The base $7$ appears $5$ times as a factor, so $7 \times 7 \times 7 \times 7 \times 7 = 7^{5}$.

Multiply first: $8 \cdot 7 = 56$. Then $3 + 56 - 2 = 57$.

$\,2^2 = 2 \cdot 2 = 4$.