Math Is Fun Forum

Bokkie

Member

Registered: 2009-02-05

Posts: 4

Please check my answers and assist where neccessary

Good day:)

i) 2/4 + 1/3
=6/12+4/12
=10/12
=5/6

ii) 3/4 - 2/7 * 1/4
=3/4 - 2/28
=21/28 - 2/28
=19/28

iii) 1/3 / 2*2
=1/3 / 4/1
= 1/3 * 1/4
=1/12

iv) 7/9 - 14/18 - 3/4 + 3/4
=7/9 - 7/9 - 6/4
=6/4
=1 2/4
=1 1/2

v) 1/2 / 6 + 8 - 3/4
=1/2 * 1/6 +8/1 - 3/4
=1/12 + 8/1 - 3/4
=1/12 + 96/12 - 36/12
=97-36/12
=61/12
=5 1/12

Question 2

i) 12 + 4(5-3)+ 34 -17-20
= 12+4(2)+34-17-20
= 12+8+34-17-20
= 54-17-20
= 17

ii) 16 / 8(3-2) - 18(6/9 - 4/9)
= 2(1)-18(2/9)
= 2 - 18/1 *2/9
=42/9 - 2/1
= 42-18/9
=24/9
=2 6/9
=2 2/3

iii) 4* 1/3(12) + 14(1/7)
= 4/3 *12/1 + 14/1 * 1/7
= 48/3+14/7
=336+42/21
= 378/21
=18

iv) 122-10(11)+5(3/4*12/1)
=122-110+5*36/4
=12+5*9
=12+45
=57

v) 68-23+45- 1/2(23-4-4-1+12)
=90-1/2(26)
=90-26/2
=64/2
=32

please note: Mixed fractions
:):dizzy

Last edited by Bokkie (2009-02-09 00:49:13)

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: Please check my answers and assist where neccessary

Everything is correct except 1(iv), 1(v), 2(ii), 2(v).

For I(iv), 1(v), you only made a careless mistake; you almost got the correct answer in 2(v); as for 2(ii), I’m not what you were trying to do, but you need to start all over again.

Bokkie

Member

Registered: 2009-02-05

Posts: 4

Re: Please check my answers and assist where neccessary

I dont know who to type a fraction that why i type it as e.g 3/4 and the dividing sign I type /. if I get a statement e.g 3/4(3+4)
does that mean 3/4* the answer in brackets?

Bokkie

Member

Registered: 2009-02-05

Posts: 4

Re: Please check my answers and assist where neccessary

can you please help me to find the correct answers?