tính nhanh 35 x 34 + 35 x 86 + 65 x 75 + 65 x 45 3 x 25 x 8 + 4 x 37 x 6 + 2 x 38 x 12 12 x 53 + 53 x 172 – 53 x 84 13/08/2021 Bởi Hailey tính nhanh 35 x 34 + 35 x 86 + 65 x 75 + 65 x 45 3 x 25 x 8 + 4 x 37 x 6 + 2 x 38 x 12 12 x 53 + 53 x 172 – 53 x 84
Đáp án: 35 x (34+86) + 65 x (75+45)=35 x 120 + 65 x 120= 120 x (35+65)= 120 x 100=12000 3 x 8 x 25 + 4 x 6 x 37 + 2 x 12 x 38= 24 x 25 + 24 x 37 + 24 x 38= 24 x (25+37+38)= 24 x 100= 2400 53 x (12+172-84)= 53 x 100= 5300 Bình luận
35 x 34 + 35 x 86 + 65 x 75 + 65 x 45 = 35 × ( 34 + 86 ) + 65 × ( 75 +45 ) = 35×120+65×120 = 120 × ( 35 + 65 ) = 120 × 100 = 12000 3 x 25 x 8 + 4 x 37 x 6 + 2 x 38 x 12 = 24 × 25 + 24 × 37 + 24 × 38 = 24 × ( 25 + 37 + 38 ) = 24 × 100 = 2400 12 x 53 + 53 x 172 – 53 x 84 = 53 × ( 12 + 172 – 84 ) = 53 ×100 = 5300 Bình luận
Đáp án:
35 x (34+86) + 65 x (75+45)=35 x 120 + 65 x 120= 120 x (35+65)= 120 x 100=12000
3 x 8 x 25 + 4 x 6 x 37 + 2 x 12 x 38= 24 x 25 + 24 x 37 + 24 x 38= 24 x (25+37+38)= 24 x 100= 2400
53 x (12+172-84)= 53 x 100= 5300
35 x 34 + 35 x 86 + 65 x 75 + 65 x 45
= 35 × ( 34 + 86 ) + 65 × ( 75 +45 )
= 35×120+65×120
= 120 × ( 35 + 65 )
= 120 × 100
= 12000
3 x 25 x 8 + 4 x 37 x 6 + 2 x 38 x 12
= 24 × 25 + 24 × 37 + 24 × 38
= 24 × ( 25 + 37 + 38 )
= 24 × 100
= 2400
12 x 53 + 53 x 172 – 53 x 84
= 53 × ( 12 + 172 – 84 )
= 53 ×100
= 5300