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1. Write all the factors for each number
a. 8 [ , , , ]
b. 16 [ , , , , ]
c. 23 [ , ]
d. 34 [ , , , ]
e. 48 [ , , , , , , , , ]
2. Find the common factors of these numbers
a. 10 and 20 [ , , , ]
b. 9 and 36 [ , , ]
c. 24 and 30 [ , , , ]
d. 12 and 15 [ , ]
3. Find the highest common factor of these numbers
a. 18 and 30
b. 24 and 56
c. 48, 112 and 114
4. Jo’s age this year is a multiple of 6. Next year it will be a multiple of 5. How old might he be?
Answer: [ ]
5. Use a calculator to work out each of these squares
a. 62
b. 183
c. 472
d. 62 – 23
e. 43 + 42
f. 122 + 132 + 142
6. Fill in the missing power.
a. 3^ = 9
b. 4^ = 64
c. 10^ = 1000