1. Calculează, respectând ordinea operaţiilor:
la) 9- 2 x 3 =
b) 80 + 15 x 7 = c) 8 - 3 x 2 + 1 =
16 + 4 x 6 =
76 + 23 x 25 = 60-8X2 - 18 =
90 - 7 x 8 =
185 + 128 x 17 = 501 – 202 x 2 + 25 =
1 000 – 5 x 7 =
5 900 - 36 x 42 = 72:8 + 64 x2 - 19 =
1
Răspunsuri la întrebare
Răspuns:
1. 9-2×3=9-6=3
2. 80+15×7=80+105=185
3. 8-3×2+1=8-6+1=5+1=6
4. 16+4×6=16+24=40
5. 76+23×25=76+575=651
6. 60-8×2-18=60-16-18=26
7. 90-7×8=90-56=34
8. 185+128×17= 185+2176=2361
9. 501-202×2+25=501-404+25=97+25=122
10. 1000-5×7=1000-35=965
11. 5900-36×42=5900-1512=779
12. 72:8+64×2-19=9+128-19=118
9 - 2 x 3 = 9 - 6
=3
80 + 15 x 7 = 80 + 103
= 183
8 - 3 x 2 + 1 =8 - 6 + 1
= 2 +1
= 3
16 + 4 x 6 = 16 + 24
= 40
76 + 23 x 25 = 76 + 575
= 651
60 - 8 x 2 - 18 =60 - 16 - 18
=34 - 18
=16
90 - 7 x 8 = 90 - 56
= 24
185 + 128 x 17 = 185 +2176
= 2361
501-202 x 2 + 25 = 501 - 404 + 25
=97 + 25
= 122
1000 - 5 x 7 = 1000 - 35
= 963
5900 - 36 x 42 = 5900-1512
= 4388
72:8 + 64 x 2 - 19 = 9 + 128 - 19
= 137 - 19
=118