Rounding
3 Digit Addition
Expanded Form
3 Digit Subtraction
Multiplication
100
Which number will round to 750 when rounded to the nearest ten?
758
801
748
748
100
54+22=
76
100
Johnny is adding 23 + 42. How can he use expanded form to solve the problem?
20+ 40= 60
3+2= 5
60+5= 65
100
56-23=
33
100
A school has 4 rows of windows with 4 windows in each row. Show a multiplication expression to represent the total windows.
4X4
200
Round 832 to the nearest hundred
900
200
35+27=
62
200
Mrs. Cook wants to solve a subtraction problem using expanded form. How can she show that for: 47-25=
40-20= 20
7-5= 2
20+2= 22
200
62-47=
15
200
What expression does the picture represent?
5X3= 15
300
Round the following addition to help solve the problem quickly. "Front end Estimation Strategy"
372 + 412 =
About 700.
300
343+216=
559
300
Use expanded form to solve: 362+127=
300+100= 400
60+20= 80
2+7= 9
489
300
447-312=
135
300
Use break apart (distributative) property to solve 6X4.
6= 3+3
3X4= 12
3X4= 12
12+12= 24
400
Mrs. McCole collected 253 feathers for an art project. She said she collected about 200 feathers. Did she round to the nearest 100 correctly?
NO. Silly Mrs. McCole! It would be about 300 feathers.
400
Mr. Ganley says hello to 472 teachers in the hallways when he gets to school. When he leaves for the day he says goodbye to 259 teachers. How many teachers does he greet each day all together?
731 teachers total!
400
Use Expanded Form to solve: 563+ 241=
500+200= 700
60+40= 100
3+1= 4
804
400
651- 370=
281
400
Use grouping strategy (Associative Property) to solve
3 X 2 X 4
(3x2) x 4 =
6x4= 24
3 x (2x4)
3x8= 24
500
Round the following number to both the nearest hundred and the nearest ten.
394
nearest hundred= 400
nearest ten= 390
500
674+341=
1,015
500
Write the number 3,426 in expanded form.
3000+400+20+6
500
Ms. Loomer has 543 pieces of candy for Halloween. She gave away 275 of them to trick or treaters. How many pieces of candy does she have left to eat?
268
500
Solve the expression using by grouping the factors in TWO DIFFERENT ways!
4 X 5 x 2=
4x5= 20
20x2= 40
5x2= 10
10x4= 40