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x + 1000 = 2000 + 3000
x + 1000 = 5000
x = 5000 - 1000
x = 4000
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1000+5000=6000 3000-1000=2000
3000+5000=8000 10000-5000=5000
1000+9000=10000 5000-5000=0
2000+5000=7000 8000-5000=3000
tk nhé
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Lan có thể mua số cây bút chì là:
10000:2000=5(cây)
Đ/S:..
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12 000 x 4 = 48 000 4000 x 3 = 12 000
3000 x 4 = 12 000 25 000 x 2 = 50 000
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Trả lời :
a)\(\frac{8}{3}+\frac{8}{9}\)
\(=\frac{72}{27}+\frac{24}{27}\)
\(=\frac{96}{27}\)
\(=\frac{32}{9}\)
b)\(988888+2000=9908888\)
Hok_tốt
#Thiên_Hy
\(\frac{8}{3}+\frac{8}{9}=\frac{32}{9}\)
988888 + 2000 =990888
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Học sinh nhẩm và ghi kết quả như sau:
3000 + 2000 x 2 = 7000
(3000 + 2000 ) x 2 = 10000
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25000 + 3000 = 28000
428000 - 2000 = 40000