Before proceeding to the solution of examples and problems be sure to read the theoretical part of the lesson
Exponentiation
1. Work out52 × 22.
а) 90;
b) 70;
c) 100;
d) 110.
2. Work out
42 × 22.
а) 64;
b) 66;
c) 58;
d) 62.
3. Work out
42 × 23.
а) 118;
b) 128;
c) 140;
d) 134.
4. Solve:
(4 × 7) ÷ 21.
а) 8;
b) 16;
c) 12;
d) 14.
5. Calculate the following expressing:
5 + (7 – 4)2 + 4(3 + 2) – 6(2 – 1).
а) 28;
b) 31;
c) 25;
d) 22.
6. Restate in exponent form, then
solve:
5 × 5 + 2 × 2 × 2 + 3 × 3.
а) 53 + 23 + 32;
b) 52 + 23 + 32;
c) 52 + 22 + 32;
d) 52 + 23 + 33.
7. Solve:
4 + (10 × 4) – 42.
а) 18;
b) 27;
c) 24;
d) 21.
8. Which is larger?
24 or 33
24 or 33
а) 24 > 33; b) 24 <
33;
c) 24 ≥ 33; d)
24 = 33.
9. Which is larger?
43 or 26
а) 43 ≥ 26; b) 43 > 26;
c) 43 < 26; d) 43 =
26.
10. Solve:
(10 – 8)3 + (6 × 4) × (4 – 2) + 103.
а) 1056;
b) 1048;
c) 156;
d) 1560.
11. Solve:
10 + (8 – 6)2 – (12 ÷ 4) + 5(6 × 2) + 3(7 – 4).
а) 84;
b) 78;
c) 80;
d) 81.
12. Solve:
9 + (2 + 3)2 – (6 ÷ 3) + 4(8 × 3) + 4(5 – 3).
9 + (2 + 3)2 – (6 ÷ 3) + 4(8 × 3) + 4(5 – 3).
а) 124; b) 136;
c) 142; d)
139.
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