Fill in the missing number. What is the pattern?
234; 334; ______; 534; 634
What is 434? The pattern is +100
100
Add 456 + 654 =
What is 1,110?
100
Round, then add.
865 + 450 =
What is 1,400?
100
David has 809 pennies and Lily has 645 pennies. About how many pennies do they have altogether?
What is 1,400?
100
9,078 + 4,356 =
What is 13,434?
200
Fill in the missing number. What is the pattern?
560; ____; 580; 590; 600
What is 570? The pattern is +10
200
Add 4,506 + 567 =
What is 5,073?
200
Round, then add.
1,450 + 2,450 =
What is 4,000?
200
Lucy went to the store and bought 86 bananas and Taylor went to the store and bought 68 bananas. About how many bananas did they buy in all?
What is 160 bananas?
200
Add, then round to check for reasonableness.
567 + 234 =
What is 801?
Rounded answer = 800? Yes, it is reasonable.
300
Fill in the missing number. What is the pattern?
580; 590; ____; 610; 620
What is 600? The pattern is 600.
300
Add 4,789 + 3,456
What is 8,245?
300
Round, then add.
896 + 1,256 =
What is 2,200?
300
Ryan played soccer for 59 minutes, Adom played soccer for 45 minutes and Bella played soccer for 102 minutes. How many total minutes did they play altogether?
What is 206 minutes?
300
Finish the pattern.
______; 465; 475; 485
What is 455?
400
Fill in the missing number. What is the pattern?
1,085; _____; 1,285; 1,385
What is 1,185? The pattern is +100
400
Add 5,903 + 5,706
What is 11,609?
400
Round, then add.
3, 408 + 2,674 =
What is 6,100?
400
On Monday, there were 59 people to visit the circus. On Tuesday, 87 people visited the circus. On Wednesday, 91 people visited the circus. About how many people visited the circus on Monday-Wednesday?
What is 240 people?
400
Solve the riddle. Start with the number 10 and add 100. Next, add one thousand. After that, round that number to the nearest hundred. Then add 5. What number am I?
What is 1,105?
500
Fill in the missing number. What is the pattern?
1,785; 1,795; ______; 1,815
What is 1,805? The pattern is +10
500
Add 36,867 + 23,507
What is 60,374?
500
Round, then add.
5,678 + 2, 098 =
What is 7,800?
500
First grade had a total of 206 students, second grade had a total of 289 students and third grade had a total of 304 students. To the nearest ten, about how many students are there in the first, second and third grade?
What is 800 students?
500
Solve this riddle. Start with the number 100. Add 100. Next, add 10. Then add two thousand. Subtract 100. Then round to the nearest hundred. What number am I?