Veto q&a 7 Month22 (1)

2018
July
5 2× 3 2 = ?
5 2× 3 2 = 5x3x
2×
2
=
15 4
= 15 x×
2
=
30
80 × 125 = ?
80 × 125 = 8016 × × 125 5 × = 5×
16 25× 5 × 5×
25
= 4× 5× 5×
= 54× 5× 5×
5
= 20x 25
= 20x5
= 100
= 20x 25
= 20x5
= 100
1 1
3 6
4 ,6 , 5
1 1 1
1
1 2 1 3
× 1 1 × 1 2 1 1 3
3 6 2 3 2 6 2 × 3
×
3 6 2 3 2 6 2 3
4 × 6 × 5 4= 4× 6 × 65 × = 54 × 6 × 5
2 1 3
6 6 6
= 4 × 6 × 5= 4 × 6 × 5
1
2 1 3
6 6 6
1
1
2 3 6
2 3
= ⎡
⎣4 × 6×
5 ⎤6
= ⎦⎡
⎣4 × 6×
5 ⎤
⎦
= [ 12000 ]
6
= [ 12000]
[ 81 5 4]
( )
1
6
1 1
8 4
3,5 ,2
1 1 1 1 4 1 1 2
× ×
2 8 4 2 4 8 4 2
3 ,5 ,2 = 3 x5 x2
4 1 2
8 8 8
= 3 × 5 × 2
= × ×
= 1620
1
8
1
8
1.
2.
3.
216 ÷ 6
216 ÷ 6 =
216
6
=
6× 6×
6
6
= 36 = 6
a× a = a
a × b = ab
2
a × b = a b
2
( + ) =
2
( − ) =
+
+
+
−
( )( )
4. a b a b 2 ab
5. a b a b 2 ab
6.
a + b a − b = a−b
2
3
5
6
7
8
@hang out
25 ÷ 5 = ?
a ÷ b = a
b
25 ÷ 5 = 25
5
= 5
200 = 2×
100
= 10 2
200
( = )
= 10x1.414 2 1.414
= 14.14
80 + 3 245 − 125 :
48
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