\(2.53.12+4.6.87-3.8.40=24.53+24.87-24.40=24.\left(53+87-40\right)=24.100=2400\)
2.53.12 + 4.6.87 - 3.8.40
= (2.12).53 + (4.6).87 - (3.8).40
= 24.53 + 24.87 - 24.40
= 24. (53 + 87 - 40)
= 24.100
= 2400
\(2.53.12+4.6.87-3.8.40=24.53+24.87-24.40=24.\left(53+87-40\right)=24.100=2400\)
2.53.12 + 4.6.87 - 3.8.40
= (2.12).53 + (4.6).87 - (3.8).40
= 24.53 + 24.87 - 24.40
= 24. (53 + 87 - 40)
= 24.100
= 2400
2.53.12+4.6.87-8.40.3 nhân là . Mình cần gấp nhanh nhé
Tính
53 . 39 + 47.39 +53.21+47.21
2.53.12+ 4.6.87 - 3. 8 .40
5.7.77 - 7.60 + 49.25 - 15.42
Ai làm nhanh mình tick nhé
1. Tính nhanh:
a) 5.7.77-7.60+49.25-15.42
b)2.53.12+4.6.87-3.8.40
tính nhanh
53.39+47.39+53.21+47.21
2.53.12+4.6.87 -3.8.40
5.7.77-7.60+49.25-12.42
Tính nhanh:
a)53.39+47.39-53.21-47.21
b)2.53.12+4.6.87-3.8.40
c)3.7.77-7.60+49.25-15.42
bai 1 tinh nhanh 2.53.12+4.6.87-3.8.40
5.7.77-7.60+49.25-15.42
bai 3 tinh gia tri bieu thuc 1 cach hop ly
b,B=1+2-3-4+5+-7-8+9+10-11-12+......-299-300+301+302
bai 4 tong cua 2 so tu nhien gap 3 lan hieu cua chung tim thuong cua ba so ay
BAN NAO GIAI DUOC TAT CA CHO 3 TICK 1BAI CHO 1 TICK 2 BAI CHO 2 TICK
Tính nhanh
a,53.39 + 47.39 - 53.21 - 47.21
b, 2.53.12 + 4.6.87 - 3.8.40
c, 5.7.77 - 7.60 + 49.25 - 15.42
53.39-47.39-53.21+2.53.12+4.6.87-3.8.40
53.39 + 47.39 - 53. 21 - 47. 21 + 2.53.12 + 4.6.87 -3.8.40