Estimation
Give the place value of the underlined digit. Then round the number to that place.
63.47
tenths, 63.5
Order the numbers 0.4, 0.45, 0.04, 0.405 from least to greatest.
0.04, 0.4, 0.45, 0.405
Write the mixed number as a improper fraction.
5 3/8
43/8
What is the perimeter of a rectangle with a length of 8 cm and a width of 5 cm?
26 cm
-18+9
-9
Give the place value of the underlined digit. Then round the number to that place.
5831.7462
thousandths, 5831.746
7.3 + 4.8
12.1
Write the improper fraction as a mixed number.
29/4
7 1/4
49 in
-15-8
-23
Estimate the sum or difference by rounding each number to the place of its leading digit.
74,380 + 16,925
90,000
8.4 - 3.76
4.64
3/10 + 7/10
10/10 = 1
60 inches = ____ feet?
5 feet
12 * -4
-48
Estimate the sum or difference by rounding each number to the place of its leading digit.
82,714 - 36,289
40,000
0.72 * 0.5
0.36
5/6 * 18
15
108 inches = ____ yards?
3 yards
48 divide (4+12)
3
Estimate the sum or difference by rounding each number to the place of its leading digit.
132,548 - 48,675
50,000
352.8 divide 7.2
49
5/9 divide1/3
15/9=5/3=1 2/3
Acute, Right, Obtuse, or Straight?
a) an angle whose measure is 35
b) an angle whose measure is 120.
a) acute
b) obtuse
Evaluate the expression when x=5 and y=3.
a) 4x-3y
b) 3(x-y)^2
a) 11
b) 12