Estimate
Estimate by rounding each number and adding or subtracting.
44 + 28=?
40+30=70
105 + 3
108
What type of operation (add or subtract) does the word COMBINED usually mean when you see it in a word problem?
add or addition
What is the value of the 8 in this number?
4,781
80
142 - 36
106
Estimate by rounding each number and adding or subtracting.
103 - 56 = ?
100-60=40
160 + 65
225
What type of operation (add or subtract) does the word FEWER usually mean when you see it in a word problem?
subtract or subtraction
What is the value of the 1 in this number?
819,593
10,000
137 - 64
73
Estimate by rounding each number and adding or subtracting.
687 + 1,785 = ?
700 + 2,000= 2,700
124 + 60 + 31
215
What type of operation (+ or -) does the word SUM usually mean when you see it in a word problem?
add or addition
Write this number in expanded form.
46,302
40,000 + 6,000 + 300 +2
249 - 96
153
Estimate by rounding each number to the nearest hundred and subtract.
11,084 - 8,417 =?
11,000-8,000= 300
11,283 + 465=?
11,748
What type of operation (+ or -) does the word HOW MANY MORE THAN (comparing to things) usually mean when you see it in a word problem?
subtract or subtraction
Write these in order greatest to least.
61,384 63,895 63,539
63,895 > 63,539 > 61,384
4,553 - 1,298
3,255
Estimate by rounding each number to the nearest hundred and then add.
5, 804 + 3,679
6,000 + 4,000= 10,000
6,708 + 938
7,646
What is the name/word for the strategy we use in class to analyze or look through a word problem before we solve it?
CUBES
Write the number in standard form.
four hundred thirty-eight thousand, sixteen
438,016
77,109 - 48,349
28,760