GRADE 7 REVISION

NUMBER BASES

INSTRUCTIONS

Time allowed: 45 Minutes

Calculators are NOT allowed

ASSESSMENT

(1) 213 eight + 755 eight =

(2) In base ten, 134 five equals...

(3) 756 eight − 127 eight =

(4) Change 134 eight to base ten.

(5) Change 38 ten to base five

(6) 13 five + 24 five =

(7) 27 can be written in base five as...

(8) Change 13 base ten to base two.

(9) Change 55 eight to base ten.

(10) Count 16 bottles in base eight

(11) 66 in base five is...

(12) If 0, 1, 2, 3 and 4 are the only digits used to write numbers, then the number base is...

(13) Change 56 eight to base ten.

(14) 142 eight + 174 eight equals...

(15) Change 174 base eight to base ten.

(16) 32 eight − 14 eight =

(17) 134 eight in base ten is...

(18) Subtract 327 eight from 765 eight.

(19) 31 five + 43 five =

(20) 44 five in base ten is written as....

(21) Change 235 eight to base ten.

(22) Write 9 in base five.

(23) Change 15 to base five.

(24) Change 134 eight to base ten.

(25) Change 38 to base five.

(26) 323 eight + 265 eight =

(27) By how much is 232 five less than 321 five?

(28) Change 175 base ten to base five.

(29) Kitapa is 54 years old. What is her age in base 8?

(30) Change 242 five to base ten.

COACH SECTION