Question

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Answer 1

1) 
a) 2³·5+3² = 8·5+9 = 40+9 = 49
b) 70⁰+0⁷⁰-1 = 1+0-1 = 0
c) 3·7¹-4·5⁰ = 3·7-4·1 = 21-4 = 17
d) 3⁴-2⁴:8-3·4 = 81-16:8-12 = 81-2-12 = 79-12 = 67
e) 5²+3·2-4 = 25+6-4 = 31-4 = 27
f) 5·2²+3-8 = 5·4+3-8 = 20+3-8 = 23-8 = 15
g) 5²-3·2²-1 = 25-3·4-1 = 25-12-1 = 13-1 = 12

3)
a) 5²:(5+1-1)+4·2 = 25:5+8 = 5+8 = 13
b) (3+1)²+2·5-10⁰ = 4²+10-1 = 16+10-1 = 26-1 = 25
c) 3²:(4-1)+3·2² = 9:3+3·4 = 3+12 = 15
d) 70-[5·(2²:4)+3²] = 70-[5·(4:4)+9] = 70-[5·1+9] = 70-[5+9] = 70-14 = 56
e) (7+4)·(3²-2³) = 11·(9-8) = 11·1 = 11
f) 5²+2³-2·(3+9) = 25+8-2·12 = 33-24 = 9
g) 6²:3²+4·10-12 = 36:9+40-12 = 4+40-12 = 44-12 = 32