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Number Sense #3
供稿人: Henry
2+4+6+8+10=
28% =                      fraction
7.6 - 5.1 + 3.5 =
5 ½ % =
(no leading zero)
126 ÷ 14 =
3.8 =
%
602=
(no comma)
86 x 50 =
(no comma)
5239 ÷ 13 =
Estimate to the nearest hundred:
9 + 19 + 29 + 39 + 49 + 59 ≈
(5×100) + (7×10)-(4×1) =
⅝+¾=
common fraction
Which is smaller?
11
9             5
or
6
3(8 +4 ÷ 2)=
39 nickels = $
417 ÷ 9 has a remainder of 
15 × 14 =
101 × 86 =
(no comma)
(⅔)
-2
=
Estimate 3.7 × 2.4 × 5.1 × 6.5 to the nearest hundred
0.012 kilograms =
grams
24 × 12.5 =
12 × 4
12
5
=
36 × 75 =
(no comma)
The median of 18, 13, 19, and 23 is
decimal
(-32) ÷ 8 =
210 has
prime factors
6
2
+
15
5
+
12
4
(common fraction)
+
3
1
=
If
3
x
=
9
7
(mixed number)
,then x =
Estimate to the nearest ten: 1000 ÷ 17 ≈
76 × 74 =
(no comma)
The radius of a circle with circumference 7π is
If 2(m + 7), then m =
The cost of driving a car 148 miles at
20 cents per mile is $
($a.bc)
The side of a rhombus with perimeter 10 is
(decimal)
108 × 108 =
(no comma)
316 =
(base 10)
If a golf cart rental costs $9.86, then one half of a
rental costs $
77 × 37 =
(no comma)
Estimate 194 × 294 to the nearest thousand
(no comma)
92 × 97 =
(no comma)
41℉ =
2 + 4 + 6 + ... + 18 + 20 =
8
5
2
× 2
5
2
=
(mixed number)
14% of 44 is 28% of
101 × 423 =
(no comma)
38 × 13 =
The sum of the supplement and the complement
of a 78ο angle is
ο
How many elements does
{j, o, n, e, s} ⋃ {j, o, h, n} have?
35% of 5250 is
(no comma)
What is the value of x?
10
1
+
15
1
=
1
x
The smallest of 4 consecutive integers that have
a sum of 54 is
Adding 28% of a number to the number is the same
as multiplying the number by
(decimal)
If f(x) =       ,

then f(.25) =
1
x
40
9
=
(decimal with no leading zero)
⅓ gallon =                     in3
The area of a square with diagonal 10  is
1213 =                     
(base 10)
92 + 182 =
Estimate 310 to the
nearest thousand
(no commas)
20 is                   % less than 25
The geometric mean between 5 and 20 is
If the long leg of a 30-60-90 triangle measures
10√3, then the hypotenuse measures
66      × 39 =
3
2
995 × 998 =
(no comma)
8
3
+      =
8
3
(mixed number)
The slope of the line y = -x + 7 is
3610 =
(base 7)
What is the coefficient of the linear term
of the product: (2x - 1)(x + 3)?
Estimate the product 142857 × 41 to the
nearest million.
(no commas)
What is the surface area of a cube which has an
inner diagonal of length √6 ?
14
15
× 14 =
(mixed number)
3367 × 3=
(no comma)
If 7n = 16,807, then n =
4! =
5      × 6       =
1
3
5
1
(mixed number)
If (0, b) is the y-intercept of the line
2x + y = -5, then b =
If 53b = 3310, then b =
The surface area of a rectangular prism with
length 2, width 2 and height 3 is
Estimate √61,000 to the nearest ten
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