Tính giá trị biểu thức (theo mẫu):
a)
a
6 x a
5
6 x 5 = 30
7
10
a
6 x a
5
6 x 5 = 30
7
10
b)
b
18 : b
2
3
6
b
18 : b
2
3
6
c)
a
a + 56
50
26
100
a
a + 56
50
26
100
d)
b
97 - b
18
37
90
b
97 - b
18
37
90
a)
a
6 x a
5
6 x 5 = 30
7
6 x 7 = 42
10
6 x 10 = 60
a
6 x a
5
6 x 5 = 30
7
6 x 7 = 42
10
6 x 10 = 60
b)
b
18 : b
2
18 : 2 = 9
3
18 : 3 = 6
6
18 : 6 = 3
b
18 : b
2
18 : 2 = 9
3
18 : 3 = 6
6
18 : 6 = 3
c)
a
a + 56
50
50 + 56 = 116
26
26 + 56 = 82
100
100 + 56 = 156
a
a + 56
50
50 + 56 = 116
26
26 + 56 = 82
100
100 + 56 = 156
d)
b
97 - b
18
97 – 18 = 79
37
97 – 37 = 60
90
97 – 90 = 7
b
97 - b
18
97 – 18 = 79
37
97 – 37 = 60
90
97 – 90 = 7
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