Tính nhẩm: a) \(\Large{4\times5=...}\) b) \(\Large{12:3=...}\) c) \(\L

Tính nhẩm:

a) \(\Large{4\times5=...}\)

b) \(\Large{12:3=...}\)

c) \(\Large{10-3-4=...}\)

d) \(\Large{5\times3+2=...}\)

e) \(\Large{15:3=...}\)

• A. a) 20
• B. b) 4
• C. c) 3
• D. d) 17
• E. e) 5

a) \(\Large{4\times5=20}\)

b) \(\Large{12:3= 4}\)

c) \(\Large{10-3-4= 7 - 4 = 3}\)

d) \(\Large{5\times3+2=15 + 2 = 17}\)

e) \(\Large{15:3=5}\)