TRANG 170.Bài 1:>,<,=?
27 469.....27 470
85 100.....85 099
30 000.....29000+1000
70000+30000.....99 000
90000+9000.....99 000
TRANG 172.Bài 1:
3000+2000x2=.....
[3000+2000]x2=? A.10 000 B.1 000 C.100
14000-8000:2=.....
[14000-8000]:2=? A.3 000 B.300 C.30
Bài 2:
a]998+5002=? A.6 000 B.600 C.60
3058x6=.....
b]8000-25=? A.7975 B.5753 C.3531
5479x4=.....
c]5821+2934+125=? A.8880 B.7770 C.6660
3524+2191+4285=? A.10000 B.9000 C.8000
d]10712:4=
29999:5=.....[dư.....]
TRANG 172.Bài 4:
___x3=978 A.326 B.215 C.104
___x4=844 A.211 B.210 C.209
___x7=4823 A.689 B.467 C.245
___x3=1281 A.427 B.306 C.205
TRANG 170.Bài 1:>,<,=?
27 469 < 27 470
85 100 > 85 099
30 000 = 29000+1000
70000+30000 > 99 000
90000+9000 = 99 000
TRANG 172.Bài 1:
3000+2000x2=3000 + 4000 = 7000
[3000+2000]x2=?
Chọn A
14000-8000:2= 14000 - 4000 = 10000
[14000-8000]:2=?
Chọn A