1) Packets of biscuits cost 80p each. Use the rule: Cost=(Number of packets)x80 to work out the cost of 4 packets a) 80p b) £1.60 c) £3.20 d) £4.80 2) Bob works for 40 hours and gets paid £10 an hour. Pay=(Pay per hour)x(Hours worked) How much should Bob get paid? a) £400 b) £50 c) £500 d) £40 3) In football Number of points=(Number of wins)x3+(Number of draws) If a team has 20 wins and 4 draws, how many points is that? a) 24 b) 64 c) 32 d) 72 4) In Science V=IR If I=5 and R=12, what does V=? a) 17 b) 7 c) 2.4 d) 60 5) If P=c-d What does P equal if c=20 and d=7? a) 27 b) 140 c) 14 d) 13 6) Use the formula a=(v-u)/t to work out a if v=30, u=20 and t=2 a) 5 b) 25 c) 20 d) 100 7) For the perimeter of a rectangle P=2(l+w) Find the perimeter if l=5 and w=3 a) 4 b) 8 c) 16 d) 32 8) C=3d What does d equal when C=12? a) 36 b) 4 c) 15 d) 9 9) D=ST What is S if D=30 and T=5 a) 6 b) 25 c) 35 d) 150 10) x+y=k Find y if x=4 and k=10 a) 14 b) 40 c) 2.5 d) 6

Using formulae quiz

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