Say/Write This Number
Say this number: 456
True or False? 35 rounded to the nearest 10 is 40.
How do you know?
True. Because 35 is exactly between 30 and 40, and because it is right in the middle we round up.
500 - 37 = ?
463
Hundreds place: 2
Ten's place: 8
One's place: 7
235
What operation is this? How do you know?
Mr. Campbell has 5 boxes of paper clips (Each box has 100 paper clips in it). He uses 38 paper clips. How many paper clips are left?
Subtraction, because Mr. Campbell started with 500 paper clips and used/took away 38 paper clips. We want to know how many paper clips he has left over.
330 - 60 = ?
270
How many hundreds are in the number 756
7 hundreds
Say this number: 987
"nine hundred and eighty seven"
What operation is this? How do you know?
You had 3 boxes of paper clips (each box has 100). You found 15 more paper clips in your cousin's room. How many paper clips do you have altogether?
Addition: 300 + 15 = 315 paper clips
850 + 65 = ?
915
What are the multiples of 10?
10,20,30,40,50,60,70,80,90,100...
Say this number: 555
"five hundred and fifty five"
Mr. Barbosa had 100 paper clips and used 14 of them.
Mr. Heckstall had 100 paper clips and used 12 of them.
Is it true that Mr. Heckstall has more paper clips left?
True, because he he used 2 less paper clips than Mr. Barbosa, which means that he has 2 more than Mr. Barbosa
777 - 40 = ?
737
What are the multiples of 100?
100,200,300,400,500,600,700,800,900,1000