Các câu hỏi tương tự
tính nhanh
18*123+9*4567*2+5310*6 phần 1+4+7+10+....................+49+52+55+58-410
1. Tính nhanh
a) 2006x125+1000 phần 126x2005-888
b) 18x123+9x4567x2+3x5310x6 phan 1+4+7+10+...+49+52+55+58-410
tính nhanh:
a]1+4+7+10+....+52+55+58-410
b]1*2+2*3+3*4+....+98*99
c]1/7+1/8+1/9+1/10+1/11+1/12+1/14+1/15+1/18+1/22+1/24+1/28+1/33
1+4+7+10+....................+49+52+55+58-410
18x123+9x4567+5310x6/1+4+7+10+...+49+52+55+58-410
Tính nhanh
A=1×5×6+2×10×12+24×8×10/1×35+2×6×10+8×6×20
B=2006×2008-3/2005+2005×2008
C=18×123+9×4567×2+3×5310×6/1+4+7+.......+55+58-410
Tính nhanh:
\(\frac{0,18\cdot1230\cdot0,9\cdot4567\cdot2+3\cdot5310\cdot0,6}{1+4+7+10_{ }+13+.......+52+55+58-410}\)
18x123+9x4567x2+5310x6
1+4+7+10+...+49+52+55+58-410
18x123+2x4567x9+6x5310
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1+4+7+10+...+49+52+55+58-410