Respuesta:
1) 317÷25×3=
12,68 × 3
38,04
2) 150-3×10-2×3+20=
150-30-2×3+20
150-30-6+20
170-30-6
170-36
134
3) 14×2-2+20-5×12-4×2×8+10=
28-2+20-5×12-4×2×8+10
28-2+20-60-4×2×8+10
28-2+20-60-64+10
28-2-60-64
58-126
-68
4) 21÷7+2÷5+2×3-4=
3+2÷5+2×3-4
3+0,4+2×3-4
3+0,4+6-4
9,4-4
5,4
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Respuesta:
1) 317÷25×3=
12,68 × 3
38,04
2) 150-3×10-2×3+20=
150-30-2×3+20
150-30-6+20
170-30-6
170-36
134
3) 14×2-2+20-5×12-4×2×8+10=
28-2+20-5×12-4×2×8+10
28-2+20-60-4×2×8+10
28-2+20-60-64+10
28-2-60-64
58-126
-68
4) 21÷7+2÷5+2×3-4=
3+2÷5+2×3-4
3+0,4+2×3-4
3+0,4+6-4
9,4-4
5,4