Răspuns :
A) 14+3=17
35-3=32
8×3=24
6×5=30
B)26+7+17=33+17=50
58-3-50=55-50=5
7+24=31
8+8=16
C)35+9×5=35+45=80
14+6:3=14+2=16
60-70×0=60-0=60
28+7×1=28+7=35
35-3=32
8×3=24
6×5=30
B)26+7+17=33+17=50
58-3-50=55-50=5
7+24=31
8+8=16
C)35+9×5=35+45=80
14+6:3=14+2=16
60-70×0=60-0=60
28+7×1=28+7=35
a ) 14 + 9 : 3 = 14 + 3 = 17
35 - 6 : 2 = 35 - 3 = 32
72 : 9 x 3 = 8 x 3 = 24
60 : 10 x 5 = 6 x 5 = 30
b) 26 + 35 : 5 + 17 = 26 + 7 + 17 = 26 + 24 = 50 ( adunarea fiind asociativa)
58 - 21 : 7 - 50 = 58 - 3 - 50 = 55 - 50 = 5
42 : 6 + 3 x 8 = 7 + 24 = 31
24 : 3 + 64 : 8 = 8 + 8 = 16
c) 35 + 27 : 3 x 5 = 35 + 9 x 5 = 35 + 45 = 80
14 + 48 : 8 : 3 = 14 + 6 : 3 = 14 + 2 = 16
60 - 70 : 1 x 0 = 60 - 70 x 0 = 60 - 0 = 60
28 + 35 : 5 x 1 = 28 + 7 = 35
35 - 6 : 2 = 35 - 3 = 32
72 : 9 x 3 = 8 x 3 = 24
60 : 10 x 5 = 6 x 5 = 30
b) 26 + 35 : 5 + 17 = 26 + 7 + 17 = 26 + 24 = 50 ( adunarea fiind asociativa)
58 - 21 : 7 - 50 = 58 - 3 - 50 = 55 - 50 = 5
42 : 6 + 3 x 8 = 7 + 24 = 31
24 : 3 + 64 : 8 = 8 + 8 = 16
c) 35 + 27 : 3 x 5 = 35 + 9 x 5 = 35 + 45 = 80
14 + 48 : 8 : 3 = 14 + 6 : 3 = 14 + 2 = 16
60 - 70 : 1 x 0 = 60 - 70 x 0 = 60 - 0 = 60
28 + 35 : 5 x 1 = 28 + 7 = 35