. 1. Compute the following
i. 231four + 322four (4 marks)

ii. 1ettwelve + 11Dsixteen. Give your answer in base ten (8 marks)

2. find m if 23 m + 101 m = 130m if m is a base (4 marks)

3. Find the base of addition and the missing digits x and y (4 marks)
2 x 6
3 4 5
y 2 4

4. Complete the addition table for base sixteen below by finding the values of w, x,y, and z.(4 marks)
+
D
E
F
10
8
w
16
y
18
9
16
x
18
19
A
17
18
19
z

5. Work out the following.
i. 324 seven – 235seven (4 marks)

ii. 412five – 221four give your answer in base four (06 marks)

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

How are sas and sss used to show that two triangles are congruent?