14 + 23 = 37
2x4=8
42=2
65 + 12 = 77
2 x 8 = 16
62=3
54 + 43 = 97
2x2=4
10  2 = 5
65 + 21 = 86
2x1=2
14  2 = 7
11 + 98 = 109
2 x 5 = 10
18  2 = 9
32 + 15 = 47
2 x 9 = 18
24  2 = 12
54 + 32 = 86
2 x 5 = 10
36  2 = 18
33 + 43 = 76
2 x 6 = 12
21 + 55 = 76
2 x 11 = 22
43 + 27 = 70
2 x 10 = 20
64 + 49 = 113
3x2=6
34 + 46 = 80
3 x 6 = 18
If I sleep 7 hours every day.
How many hours do I sleep in
4 days?
How many cm in 1 km?
What is the next number:
2, 4, 6, 8, 10, ?
What is the perimeter of this
equilateral triangle:
28 hours
100,000cm
12
6cm
40  2 = 20
50  2 = 25
33=1
63=2
77 + 33 = 110
3 x 4 = 12
93=3
92 + 65 = 157
3x0=0
15  3 = 5
21 + 55 = 76
3x3=9
18  3 = 6
143 + 321 = 464
3 x 9 = 27
27  3 = 9
676 + 453 = 1129
3 x 11 = 33
36  3 = 12
875 + 121 = 996
3 x 5 = 15
42  3 = 14
463 + 353 = 816
3 x 8 = 24
45  3 = 15
131 + 646 = 777
3 x 10 = 30
57  3 = 19
Time
Time
Time
2cm
At the zoo, there are 4 zebras
and 3 emus, how many legs
are there?
If I can run 5 km an hour, how
many km do I run in 15 mins?
There are 32 slices of pizza
and 8 people, how many slices
does each person get?
It takes me 2 mins to make
one burger, how long would it
take to make 12?
A shirt costs $5, how much do
4 shirts cost?
How many cents in $312.11?
Time
22 legs
1.25km
4 slices
24 minutes
$20
31,211 cents
Week 5 Calculations: Order of Operations II
1. 15 – (16 – 8) = 7
2. 63 – (15 + 22) = 26
3. 100 – (43 – 34) = 91
4. (185 + 229) – (229 – 136) =
321
5. 444 – (232 – 64 + 12) = 264
6. 60  (15 x 2) + 16 = 18
7. (75  25 + 18) x 5 = 105
8. (15 + 14) x 5 = 145
9. 190  (60  6) x 13 + 6 = 253
10. 7 x 9 – (5 x 6) = 33
11. 18 + 30 x 4  3 = 58
12. (6 + 3) x (4 + 7) = 99
13. (130 – 2)  42 = 8
14. 65 x 15  (13 – 10) = 325
15. 15  (2 + 3) x 19 = 57
16. (40 – 22) x 7 6 = 21
17. 150  5  5  2 = 3
18. 85 – 6 x 7 = 43
19. [18 + (18 x 18)]  18 = 19
20. [(42 + 63)  5] x 6 = 126
Extension Questions
1. 5250  [(80 + 25)  (36 – 31)] =
250
2. [(106 – 20) – 32 – 13)] x 5 =
205
3. 79 – [32 – (18  2)] = 56
4. [150  (22 + 3)] x 14 = 84
5. 15  [64 – (82 – 21)] = 5
6. [(30 – 16) + (29 – 11)] x 20 =
640
7. 91 – [(5 x 6) + (4 x 9)] = 25
8. {[81  9] + (36  4)} x 4 = 72
9. 15 + 5 x 3 – (6 x 4 – 10)  7 + 7 – (11 x 6 – 10 x 5) = 19
10. 18 x 2 + 6  3 + (36  6 + 8) + [5 + (18  3) x 2] = 69
Week 5 Problems: Order of Operations II
Please show your working out in the space provided.
1. Kitty baked 640 brownies. She ate 120 herself and divided the rest
equally among her 8 family members. How many brownies did
each family member receive?
Answer: 65
2. To bake 72 brownies, Kitty requires 24 eggs. How many eggs does
Kitty require if she decides to make 648 brownies?
Answer: 216
3. Lena received 16 dozen roses, she keeps 36 in a vase and shares
the rest equally among her 6 friends. How many roses does each
friend receive?
Answer: 26
4. Every month, Liz spends $4,235 and saves $2,135. What is Liz’s
annual salary?
Answer: $76,440
5. There are 475 cats, 521 dogs and 784 mice in the pet shop. If the
owner wants 4 animals per cage, how many cages are required?
Answer: 445
6. At a zoo, there are 1234 reptiles, 2487 mammals and 23415
insects. If the curator wants 8 sections in the zoo, how many
creatures should there be in each section?
Answer: 3,392
7. It is 47 km from Point A to B, 25 km from Point B to C, 47 km from
Point C to D and 25 km from Point D to A. How many km would
Natalie have to travel if she wishes to make 6 laps?
Answer: 864km
8. Each week Sean receives $180, if she saves 2/6, how much money
does she spend a week?
Answer: $120
9. Kurt the crazy rock star breaks 18 guitars in January; he breaks 3
times as many guitars in February and breaks half as many guitars
in March as he did in February. How many guitars does Kurt break
altogether in those 3 months?
Answer: 99
10.
Belle and Sebastian raise goose for a living. Belle takes care
of 17 geese and Sebastian takes care of 3 times as many as Belle.
Each goose can lay 6 eggs a day. How many eggs can Belle and
Sebastian collect in 3 fortnights?
Answer: 17,136
Extension Questions
11.
213 girls and 325 boys attend a Jiggles concert. If each
ticket cost $56.50, how much did the Jiggles collect altogether?
Answer: $30,397
12.
There are 2,256 workers in a Noke sweatshop and 2,468
workers in an Abidas sweatshop. Human Rights activists stage a
liberation. If there are 3 times as many adults as there children.
How many children are liberated?
Answer: 1,181
13.
Maggie has 258 seashells, Milly has half as many shells as
Maggie, Molly has 5 times as many shells as Milly and May has 46
more shells than Molly. How many shells do the girls have
altogether?
Answer: 1,723
14.
Jess bought an armchair for $495, it cost 3 times as much as
a beanbag. The rug that is placed under the furniture cost 7 times
as much as the beanbag. How much change will Jess receives if
she pays for all 3 pieces with $2,000?
Answer: $185
15.
A chocolate factory manufactures 12,492 bars a day,
however 231 have too much cocoa powder, 142 are shaped oddly
and 87 are given away as samples. The rest of the chocolate is
repacked into boxes of 32, how many boxes are needed?
Answer: 376
16.
A glue machine can produce 215 bottles an hour, the
machine operates for 6 hours a day, 7 days a week. Every week
they find 18 faulty bottles. How many quality bottles does the
machine produce in 15 weeks?
Answer: 135,180
17.
There are 7,704 people in 3 identically sized towns. If each
person in the town receives a government pension of $125 plus a
milk allowance of $12 a fortnight, how much money does one town
receive from the government in 6 weeks?
Answer: $1,055,448
18.
2% of Eric’s annual salary is $3547, how much does he earn
a year?
Answer: $177,350
19.
$150,036 is shared between Anna, Lana and Fontana. Anna
receives twice as much as Fontana and Lana receives 3 times as
much as the other 2 combined. Lana also receives 3 payments of
$65 from her mother. How much money does Lana receive
altogether?
Answer: $112,722
20.
Deirdre drove on day one 451km, day two 345km, day three
423km and day four 125km. Each day she drives for 6 hours. What
is her average speed per hour?
Answer: 56 km/h