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Place Value and Value
Expanded Form
Rounding
Front End Estimation
Multiplication
100
700
What is the value of the 7 in 789?
100
70+4
What is the expanded form of 74?
100
Greater than 5, round up Less than 5 round down.
What are both of our rounding rules? (hint ______ than___, round_____ and ________ than____, round _______)
100
Keep the greatest place value and turn all other digits to zero (answers may vary)
What is front end estimation? (Think about how you solve front end estimation.)
100
Ones
What place value do we multiply first?
200
Thousands
What is the place value of the 8 in 28,215?
200
800+40+3
What is the expanded form of 843?
200
80 8>5, so round up
What is 78 rounded to the nearest ten?
200
Greatest
In front end estimation you keep the (greatest, smallest) place value?
200
42 x 6 12 240 252
What is 42 x 6? Use the place value method to solve.
300
90,000+2,000+800+6
What is the expanded form of 92,806?
300
340 2<5, round down
What is 342 rounded to the nearest 10?
300
78 + 34= 112 70 + 30= 100
Add 78 + 34 then use front end estimation to check your work.
300
823 15 x 5 100 4000 4,115
What is 823 x 5? Use the place value method to solve.
400
14,325
10,000+4,000+300+20+5 is the expanded form of what number?
400
386 + 829= 1,215 400 + 800= 1,200
Add 386 + 829, then round to the nearest hundred to check your work.
400
23,486 - 12,273= 11,213 20,000- 10,000= 10,000
Subtract 23,986 - 5,211, then use front end estimation to check your work.
400
718 48 x 6 60 4200 4,308
What is 718 x 6? Use place value method to solve.
500
2= 20,000 7= 7,000 6= 600 9= 90 8= 8
What is the value of every digit in 27,698?
500
84,072
80,000+4,000+70+2 is the expanded form of what number?
500
942-761= 181 900-800= 100
Subtract 942 - 761, then round to the nearest 100 to check your work.
500
63,231 + 6,243= 69,474 60,000 + 6,000= 66,000
Add 63,231 + 6,243, then use front end estimation to check your work.
500
5,329 27 x 3 60 900 15000 15,987
What is 5,329 x 3? Use place value method to check your work.