2.a
[tex]11 \times 17 \times 19 \\ = 187 \times 19 \\ = 3553[/tex]
b.
[tex]13 \times 25 \times 8 \\ = 13 \times 200 \\ = 2600[/tex]
d.
[tex]13 \times 14 \times 15 \\ = 13 \times 210 \\ = 2730[/tex]
e.
[tex]37 \times 35 \times 12 \\ = 37 \times 420 \\ = 15540[/tex]
3. a
[tex]2 \times 37 \times 5 \\ = 10 \times 37 \\ = 370[/tex]
b.
[tex]2 \times 25 \times 17 \times 5 \times 4 \\ = 10 \times 25 \times 17 \times 4 \\ = 10 \times 100 \times 17 \\ = 1000 \times 17 \\ = 17000[/tex]
c.
[tex]250 \times 2 \times 4 \times 579 \times 5 \\ = 1000 \times 2 \times 579 \times 5 \\ = 1000 \times 10 \times 579 \\ = 10.000 \times 579 \\ = 5790000[/tex]
4.a.
[tex]104 \times 52 - 179 \\ = 5.408 - 179 \\ = 5229[/tex]
b.
[tex]49 \times 28 - 31 \times 14 \\ = 1372 - 434 \\ = 938[/tex]
c.
[tex]567 \times 3 + 45 \times 11{}^{} \\ = 1701 + 495 \\ = 2196[/tex]
e.
[tex]3021 - 113 \times 19 + 74 \times 86 \\ = 3021 - 2147 + 6364 \\ = 7238[/tex]
f.
[tex]67 \times 34 - 24 \times 25 + 22 \times 11 \\ = 2278 - 600 + 242 \\ = 1920[/tex]
