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Rounding
Representing Whole Numbers
Subtraction
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100
Put the following numbers in order from greatest to least. 89 9327 23 9328 145
9328 9327 145 89 23
100
5784 rounded to the nearest 10's place
5780
100
What is 2845 in pictorial form
2 thousands cubes 8 hundreds cubes 4 tens rows 5 ones cubes
100
9841-7493=
2348
100
3489+9084=
12,573
200
which is greater: 9834 or 9845
9845
200
Round 7598 to the nearest thousand
8000
200
One thousand, five hundred, forty-six in standard form
1546
200
8032-7639=
393
200
7894+6345=
14,239
300
Estimate and then add the following sum: 894+984=
900+1000=1900
300
9473 rounded to the nearest thousand
9000
300
What is 7845 in expanded form?
7000+800+40+5=7845
300
4000-3482=
518
300
5982+9700=
15,682
400
order the following from greatest to least, and then least to greatest: 9856, 9985, 8457, 9853
9985, 9856, 9853, 8457 8457, 9853, 9856, 9985
400
4739 rounded to the nearest hundred
4700
400
8457 in written form
Eight thousand, four hundred, fifty-seven
400
Alberta became a province in 1905. It's 2013 today. How old is Alberta?
108
400
Jane has done 3489 questions for homework tonight. She has 7892 questions left. How many questions did she have altogether?
11,381
500
What does estimating mean
A reasonable, educated, rough calculation of an approximate number
500
How do you know if you should round up or down?
Round down when the important number is lower than 5, round up if the number is 5 or higher.
500
6831 in pictorial form
6 thousands cubes 8 hundreds cubes 3 tens rows 1 ones cube
500
Dan ate 8945 apples. He started with 9834 apples. How many does he have left?
889
500
Sarah did 8729 questions for homework. Kyle did 3871. They each have 9732 questions left. How many questions will they do together?
22,332