Unit 1:
Number Expressions
Number Expressions
Which expression represents 2 years older than 9 years old?
a) 9 + 2
b) 9 ÷ 2
c) 9−2
d) 9 × 2
a) 9 + 2
800 × 23
a) 184
b) 1,840
c) 18,400
d) 184,000
c) 18,400
What is the least common denominator of 5/9 and 1/12 ?
36
5/8 − 1/4
a) 1/8
b) 3/8
c) 1/2
d) 1
3/8
5 1/2
+1 3/4
+ 2 1/2
9 3/4
Bret has 14 cents. He needs double this amount to buy an eraser. Which expression represents doubling 14?
2,000 × 32
64,000
3/8+1/4
a) 3/4
b) 5/8
c) 4/12
d) 3/2
b) 5/8
2/3 − 1/6
1/2
12 7/10
− 4 3/10
8 2/5
Which expression represents these words?
16 minus the sum of 8 and 5
a) 16−8×5
b) 16−(8−5)
c) 16−8+5
d) 16−(8+5)
d) 16−(8+5)
5,000 × 280
1,400,000
1/10+2/5
1/2
5/8 − 7/12
1/24
6 7/8
− 2 3/8
4 1/2
Which expression represents these words?
the total of 4 and the quotient of 10 and 2
a) 4 + 10 ÷ 2
b) 10 + 4 ÷ 2
c) (4+10)÷2(4+10)÷2
d) 10 + 2 ÷ 4
a) 4 + 10 ÷ 2
3971 X 85
337,535
1/6 + 5/8
19/24
15/16 − 5/12
25/48
15 3/10
−8 9/10
6 2/5
Which expression represents these words?
the product of 8 and 3 reduced by the difference of 12 and 1
a) 8+3−(12−1)
b) 8×3−(12−1)
c) 8×3−12−1
b) 8×3−(12−1)
269 × 21
5,649
2/3 + 3/4
1 5/12
3/4−8/25
43/100
5 5/8
+ 1/2
6 1/8