156 : 100 - 126 : 100
Tính bằng cách thuận tiện nhất:
A. 35 + 156 + 21 + 75 + 179 + 44
B. 173 + 45 + 135 + 27 + 50
Mẫu
A. 35 + 156 + 21 + 75 + 179 + 44
= (35 + 75) + (156 + 44) + (21 + 179)
= 100 + 100 + 100
= 300
B. 173 + 45 + 135 + 27 + 50
= (173+27) + (45 +135) +50
=200 + 180 + 20 + 30
= 200 +200 +30
=430
A. 35+156+21+75+179+44
=(35+75)+(156+44)+(21+179)
=100+200+200
=500
B.173+45+135+27+50
=(173+27)+(45+125)+50
=200+180+20+30
=200+200+30
=430
Tính nhanh
a) 126 x 4 + 126 x 5 + 126
b ) 184 x 100 - 50 x 100
a) 126 x 4 + 126 x 5 + 126
= 126 x 4 + 126 x 5 + 126 x 1
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
b) 184 x 100 - 50 x 100
= ( 184 - 50 ) x 100
= 134 x 100
= 13400
126 x 4 + 126 x 5 + 126
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
224 : 100 156 : 100 =
156+4+40-100=
156 + 4+40 -100 = 160 + 40 - 100 = 200 - 100 = 100
156 + 4 + 40 - 100
= 160 + 40 - 100
= 200 - 100
= 100
Tính nhanh : 4*126*26
134*100+250*100-84*100
giải ra cẩn thận nhé ai dúng tk cho
134 x 100 + 250 x 100 - 84 x 100
= (134 + 250 - 84 ) x 100
= ( 384 - 84 0 x 100
= 300 x 100
= 30000
a, 13104
b,134*100+250*100-84*100=100*(134+250-84)=100*300=30000
134*100+250x100-84x100
=100x(134+250-84)
=100x300
=30000
Tìm 126% của 100
156 + 138 + 44 + 45 + 62+ 55 - 100
156 + 138 + 44 + 45 + 62 + 55 -100
= 400
156 + 138 + 44 + 45 + 62+ 55 - 100 = ( 156 + 44 ) + ( 138 + 62 )+( 45 + 55)-100
= 200 + 200 + 100 - 100
= 200 + 200
= 400
tim c/s tan cung cua cac tong hieu sau 75 ^53-21^54 , 125^91+126^92,357^100 - 468^100
7553 - 2154 = ( ....5 ) - 214 . 13 . 212 = ( .....5 ) - ( ....1 ) . ( ....1) = ( ....5 ) - ( ....1 ) = ( ....4 )
12591 + 12692 = ( ....5 ) + ( ....6 ) = ( ....1 )
357100 - 468100 = 3574 . 25 - 4684.25 = ( ....1) - ( ...6 ) = -( ...5 )
làm theo mẫu
143/10 = 14 3/10 = 14,3
126/100 = .................................................
1246/10 = .................................................
2001/1000 = .............................................
340/100 = .................................................
29876/10000 = .........................................
1002/100 = ...............................................
3078/100 = ...............................................
126/100 = 1,26
1246/10 = 124,6
2001/1000 = 2,001
340/100 = 3,4
29876/10000 = 2,9876
1002/100 = 10,02
3078/100 = 30,78
Hoc tot