Question

Tính nhẩm

a. 998 + 45

b. 57 + 195

c. 497 + 64

d. 25 . 24

e. 49 . 101

g. 19 . 64 + 76 . 34

h. 35 . 12 + 65 . 13

Answer 1

a.1043

b.252

c.561

Answer 2

a) 998+ 45= 1043.

b) 57+ 195= 252.

c) 497+ 64= 561.

d) 25. 24= 600.

e) 49. 101= 4949.

g) 19. 64+ 76. 34= 3800.

h) 35. 12+ 65. 13= 1265.

Answer 3

a.1043

b.252

c.561

d.600

e.4949

g.3800

h.1268

Answer 4

998+45=1043

57+195=252

497+64=561

25x24=600

49x101=4949

19.64+76.34

=1216+2584

=3800

35.12+65.13

=420+845

=1265

Ủng hộ mk nha

Answer 5

\(a) 998+45=1000+43=1043\)

\(b)57+195=52+200=252\)

\(c)497+64=500+61=561\)

\(d)25.24=25.4.6=100.6=600\)

\(e)49.101=49.11.10=593.10=5930\)