Estimation & Conversions
Finish the saying, "5 and above, _____ it _____ _______. ___ and below, ______ it _____.
5 and above, give it a shove. 4 and below, let it go.
Fact Fluency!
8 x 5 = ?
12 x 10 = ?
4 x 7 = ?
8 x 6 = ?
8 x 5 = 40
12 x 10 = 120
4 x 7 = 28
8 x 6 = 48
Draw the correct mth symbol for the following:
The Sum =
The Product =
The Difference=
The Sum = addition
The Product = multiplication
The Difference= subtraction
QUICK FACTS
24 ÷ 3 = ?
36 ÷ 9 = ?
45 ÷ 8 = ?
77 ÷ 7 = ?
24 ÷ 3 = 8
36 ÷ 9 = 4
45 ÷ 8 = 5
77 ÷ 7 = 11
Write the meanings of each letter in the acronym below:
P.E.M.D.A.S
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Estimate the following problems (SHOW ALL WORK):
289 ÷ 68 = ?
Either answers I would accept:
289 ÷ 68 = 300 ÷ 60 = 5
289 ÷ 68 = 280 ÷ 70 = 4
Area = L x W
Solve & Draw A Picture:
23 inches x 42 inches = ? inches2
23 x 42 = 966in2
Write the numerical expression:
The sum of 21 and 4, doubled
(21 + 4) x 2
34 ÷ 8 = 4 _ 2
Fill in the following information:
Divisor= ?
Dividend= ?
Quotient= ?
Remainder= ?
Divisor= 8
Dividend= 34
Quotient= 4
Remainder= 2
PEMDAS PROBLEM:
24 ÷ (16 - 8) x 3 + 5
24 ÷ (16 - 8) x 3 + 5
24 ÷ 8 x 3 + 5
3 x 3 + 5
9 + 5
14
Estimate the following problems (SHOW ALL WORK):
340 ÷ 42 = ?
Either answers I would accept:
340 ÷ 42 = 320 ÷ 40 = 8
340 ÷ 42 = 360 ÷ 40 = 9
Show ALL work, Solve & Label:
$231.46 x 39= $ ????
$231.46 x 39 = $ 9,026.96
Write the numerical expression and then solve (Show ALL work):
Triple the sum of 45 and 55
(45 + 55) x 3
100 x 3
300
Solve using Long Division. There will be no remainder!
450 ÷ 12
37.5
A slice of pizza cost $1.67. How much will 28 slices cost? Show all work and circle your answer. Label!
$1.67 x 28
$47.04
The average bear eats 44 pounds of food in a week.
Write a estimation problem showing how many pounds a bear eats in a day.
Actual Problem= 44 ÷ 7 (1 week) = ?
Estimation Problem= 42 ÷ 7 (1 week) = 6 lbs a day.
SOLVE: 9.85 x 13
9.85 x 13 = 128.05
Write the numerical expression and then solve (Show ALL work):
Divide the difference of 92 and 17 by 3.
(92 - 17) ÷ 3
75 ÷ 3
25
Solve using Long Division. There will be no remainder!
609 ÷ 14
43.5
Long division with no remainder- Solve!
55.35 ÷ 45 = ?
55.35 ÷ 45 = 1.23
1,578 meters = how many kilometers ?
(1 km = 1,000m)
&
16 weeks = how many days?
(1 week = 7 days)
1,578 m ÷ 1000 = 1.578 km
&
16 weeks x 7 days = 112 days
ESTIMATE FIRST & THEN SOLVE:
184.3 x 45
ESTIMTION: 180 x 50 = 9,000
ANSWER: 184.3 x 45 = 8,293.5
Write the numerical expression and then solve (Show ALL work):
The difference between 9 thirty-sevens and 8 thirty-sevens
(9x37) - (8x37)
333 - 296
37
Solve using Long Division. There will be a remainder!
1848 ÷ 32
57 Remainder 24
The Aon Centre in Chicago, Illinois, is one of the world's tallest buildings. Built in 1973, it is 1,136 ft high and has 80 stories. If each story is of equal height, how tall is each story? Show al of your work and solve!
1,136 ÷ 80 = 14.2 ft a story