Overview: 4 questions will be solved this time.Among them
☆2 arithmetic calculations
☆1 integer calculations
☆1 convert the decimals to fractions
[ 1/4 Digital analysis ]
Work: Convert decimal 2.67 to fractional form.
Question type: Convert decimal to fraction
Solution:
*Note: Convert finite decimal to fraction.[2/4 Formula]
Work: Calculate the value of equation 3*9+4*8+5*7+6*6+7*5+8*4+9*3 .
Question type: Mathematical calculation
Solution:
3*9+4*8+5*7+6*6+7*5+8*4+9*3
=27+4*8+5*7+6*6+7*5+8*4+9*3
=27+32+5*7+6*6+7*5+8*4+9*3
=27+32+35+6*6+7*5+8*4+9*3
=27+32+35+36+7*5+8*4+9*3
=27+32+35+36+35+8*4+9*3
=27+32+35+36+35+32+9*3
=27+32+35+36+35+32+27
=59+35+36+35+32+27
=94+36+35+32+27
=130+35+32+27
=165+32+27
=197+27
=224 Answer:3*9+4*8+5*7+6*6+7*5+8*4+9*3=224[3/4 Formula]
Work: Calculate the value of equation 8+88+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888 .
Question type: Mathematical calculation
Solution:
8+88+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888
=96+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888
=984+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888
=9872+88888+888888+8888888+88888888+888888888+8888888888+88888888888
=98760+888888+8888888+88888888+888888888+8888888888+88888888888
=987648+8888888+88888888+888888888+8888888888+88888888888
=9876536+88888888+888888888+8888888888+88888888888
=98765424+888888888+8888888888+88888888888
=987654312+8888888888+88888888888
=9876543200+88888888888
=98765432088 Answer:8+88+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888=98765432088[4/% Digital analysis]
Assignment: Convert 2/33 to decimal.
Question type: Convert fraction to decimal
Solution:
2/33=0.06 *Note: Output 2 pure recurring decimals for this fraction,
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