1/17.(-84)+17.(-16)
2/15.76-15.16
3/-37.(-24)+37.76
4/1975.(-5)+1975.15
5/79.89-79.(-11)
6/ 48.195-48.95
7/ 157.17-157.7
8/ 15.(-176)+15.76
9/ 47.(-147) -47 .(-47)
10/ 153.177-153.77
1/17.(-84)+17.(-16) 2/15.76-15.16 3/-37.(-24)+37.76 4/1975.(-5)+1975.15 5/79.89-79.(-11) 6/ 48.195-48.95 7/ 157.17-157.7 8/ 15.(-176)+15.76 9/ 47.(-
By Kennedy
Đáp án:
1/ 17. (-84) + 17. (-16)
= 17. [(-84)+(-16)]
= 17. (-100)
= -1700.
2/15 . 76 – 15 . 16
= 15 . (76 – 16)
= 15 . 60
= 900.
3/-37.(-24) + 37.76
= 37.24 + 37.76
= 37 . (24 + 76)
=37 . 100
= 3700.
4/1975.(-5)+1975.15
= 1975 . [(-5) + 15]
= 1975 . 10
= 19750.
5/79.89-79.(-11)
= 79 . [89 -(-11)]
= 79 . 100
= 7900
6/ 48.195-48.95
= 48 . (195 – 95)
= 48 . 100
= 4800
7/ 157.17-157.7
= 157 . (17 – 7)
= 157 . 10
= 1570
8/ 15.(-176)+15.76
= 15 . [(-176) + 76]
= 15 . (-100)
= -1500
9/ 47.(-147) -47 .(-47)
= 47 . [(-147) -(-47)]
= 47 . 100
= 4700
10/ 153.177-153.77
= 153 . (177 – 77)
= 153 . 100
= 15300
` 1) ` ` 17.(-84)+17.(-16) `
` = 17.(-84-16) `
` = 17.(-100) `
` = -1700 `
` 2) ` ` 15.76-15.16 `
` = 15.(76-16) `
` = 15.60 `
` = 900 `
` 3) ` ` -37.(-24)+37.76 `
` = 37.(24+76) `
` = 37.100 `
` = 3700 `
`4) ` ` 1975.(-5)+1975.15 `
` = 1975.(-5+15) `
` = 1975.10 `
` = 19750 `
` 5) ` ` 79.89-79.(-11) `
` = 79.(89+11) `
` = 79.100 `
` = 7900 `
` 6) ` ` 48.195-48.95 `
` = 48.(195-95) `
` = 48.100 `
` = 4800 `
` 7) ` ` 157.17-157.7 `
` = 157.(17-7) `
` = 157.10 `
` = 1570 `
` 8) ` ` 15.(-176)+15.76 `
` = 15.(-176+76) `
` = 15.(-100) `
` = -1500 `
` 9) ` ` 47.(-147)-47.(-47) `
` = 47.(-147+47) `
` = 47.(-100) `
` = -4700 `
` 10) ` ` 153.177-153.77 `
` = 153.(177-77) `
` = 153.100 `
` = 15300 `