70+30+100+100
Tính giá trị của biểu thức:
a) 90 – ( 30 – 20) = ..........................
= ..........................
90 – 30 – 20 = ..........................
= ..........................
b) 100 – (60 + 10) = ..........................
= ..........................
100 - 60 + 10 = ..........................
= ..........................
c) 135 – (30 + 5) = ..........................
= ..........................
135 – 30 – 5 = ..........................
= ..........................
d) 70 + (40 – 10) = ..........................
= ..........................
70 + 40 – 10 = ..........................
= ..........................
a) 90 – ( 30 – 20) = 90 – 10
= 80
90 – 30 – 20 = 60 - 20
= 40
b) 100 – (60 + 10) = 100 – 70
= 30
100 - 60 + 10 = 40 + 10
= 50
c) 135 – (30 + 5) = 135 – 35
= 100
135 – 30 – 5 = 105 – 5
= 100
d) 70 + (40 – 10) = 70 + 30
= 100
70 + 40 – 10 = 110 -10
= 100
nguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
nguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
100*70+100*30+100*0
Tính thuận tiện
100 */ 70 + 100 * 30 + 100 * 0
= 100 * ( 70 + 30 + 0 )
= 10000
****n nhe
100 x 70 + 100 x 30 x 100 x 0
= 100 x ( 70 + 30 + 0 )
= 100 x 100
= 10000
100 x 70 + 100 x 30 x 100 x 0
= 100 x ( 70 + 30 + 0 )
= 100 x 100
= 10000
30 + 70 + 80 + 20 + 100 + 100 + 800 =?
30 + 70 + 80 + 20 + 100 + 100 + 800
=(30 + 70) + (80 + 20) + 100 + 100 + 800
=100 + 100 +100 +100 + 800
=100 x 4 + 800
=400 + 800
=1200
30 + 70 + 80 + 20 + 100 + 100 + 800
= (30 + 70) + (80 + 20) + 100 + 100 + 800
= 100 + 100 + 100 + 100 + 800
= 100 . 4 + 800
= 400 + 800
= 1200
=( 30+70) + ( 80+20) + ( 100+100+800)
= 100 + 100 + 1000
= 200 + 1000
= 1200
30 + 70 + 100 =?
200 nha
aj k mk mk sẽ k laj
thanks nhju
nha bn
30+70+100
=(30+70)+100
=100+100
=100.2
=200
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
chuc bn hoc gioi!
30 + 70 + 100 = ( 30 + 70 ) + 100 = 100 + 100 = 100 x 2 = 200 nhé
55 +_______ = 100
________- 35 = 70
70 + 30 =________
Tính bằng cách thuận tiện (theo mẫu)?
Mẫu: 30 + 89 + 70 = 30 + 70 + 89 = 100 + 89 = 189 |
a) 30 + 192 + 70 b) 50 + 794 + 50
c) 75+ 219 + 25 d) 725 + 199 + 125
a) 30 + 192 + 70 = 30 + 70 + 192
= 100 + 192 = 292
b) 50 + 794 + 50 = 50 + 50 + 794
= 100 + 794 = 894
c) 75 + 219 + 25 = 75 + 25 + 219
= 100 + 219 = 319
d) 725 + 199 + 125 = 725 + 125 + 199
= 850 + 199 = 1 049
7+3+70+30+100
= 10 + 100 + 100
= 10 + 200
= 210
k nha
30 + 40 +50 +70 +100 x 0
Số?
a) 11 568 = 10 000 + 1 000 + ? + 60 + ?
b) 72 934 = 70 000 + 2 000 + ? + ? + ?
c) ? = 80 000 + 6 000 + 100 + 30 + 7
d) ? = 20 000 + 100 + 30
a) 11 568 = 10 000 + 1000 + 500 + 60 + 8
b) 72 934 = 70 000 + 2000 + 900 + 30 + 4
c) 86 137 = 80 000 + 6 000 + 100 + 30 + 7
d) 20 130 = 20 000 + 100 + 30