11 Calculează, respectând regulile învățate.
a. 12 x 10:4 + (190 -30) : 8+ (202 : 2 + 33 x 3) : 100
b. (9 x 7 + 7 x8) *4-(404:4 + 44:4):2
c. 1 000 - (250:2 + 25 x 3) x 3 - (25 + 15 x 5) x 4
d. 23 x (157 - 24 x 6) - 477: 3 - (22 + 220:2)
e. 135 + 5 000: (1385-385) + 3 < (40 +8:2)
f. 36 +0: (125 x 25 - 25 x 25) + 33 x 3-33:33 + 33:3
g. 909 - 909 (102-909:9 +0:1) - 99 (9x9:9-9)
h.3 x (6-6:2) + 305:5+ (100:5 + 8 x 5 x 0): 5
i. 138 + (27:3-1)2:8-2 x (100 - 195:15) x 2
1.7+7:7(7-7:7) 7:7
j. (202:2 + 101 Ⓡ2):3-2 (2-2:2)
k. 36 + 8 x (100-47-53 + 2 x 18):(13 - 36:9)
1. 1000: (74 +26) + 100 x (8 + 2) - (2 x 286 + 2 x 214)
m. 425: (600 - 595) - (81:9 + 71 x 1) + (4 x 11 - 66: 2)
n. 35 +1 000: (15 x 25 - 25 x 25) + 3 x (40 +8:2)
0.550:10 + 20 x (81:9 +9) - 20:06 x 7 - 11 x 2)
p. 82 +9 x (5 x 5-5):(5 + 5 x 5-4 5): (9-81:9 + 90:10)
q. 15 - 3x6:(3x3x3:3+0:5) + 30:03:3+5)
nontru
