VOCABULARY
SOLVING PROBLEMS
ROUNDING WHOLE NUMBERS
ROUNDING DECIMALS
ESTIMATING THE SUMS AND DIFFERENCES
100
you can add two numbers in any order
What is commutative property
100
Nate has a $5.00 bill and a $10.00 bill. He spends $2.50 for a smoothie and $2.00 for a muffin. How much money does he have left
What is $10. 50
100
677 to the nearest hundreds
What is 700
100
75.8 to the nearest ones
What is 76
100


What is 110

200
You can change the grouping of addends
What is associative property
200
Elias saved $30 in July, $21 in August, and $50 in September. He spent $18 on movies and $26 on gas. How much money does Elias have left?
What is $57.00
200
573 to the nearest tens
What is 570
200
0.756 to nearest hundredths
What is 0.76
200
788 - 572
What is 200
300
These are numbers that are easy to compute mentally
What is compatible numbers
300
Lonny planted 15 roses, 12 geraniums, and 6 daisies. His dog digs up 4 roses and 2 daisies. How many flowers are left planted?
What is 27 flowers
300
34, 739 to the nearest thousand
What is 35, 000
300
643.82 to the nearest ones
What is 644
300
2.9 - 3.9
What is 7
400
Replaces one number with another number that tells about how many or how much
What is rounding
400
Theater tickets for children cost $5. Adult tickets cost $3 more. If 2 adults and 2 children buy theater tickets, what is the total cost?
What is $26
400
930,998 to the nearest thousands
What is 931, 000
400
23.009 to the nearest hundredths
What is 23.01
400
3,856 - 2,357
What is 2,000
500
When say about how much an item might be you are giving this
What is estimate
500
Luis has a $10 bill and three $5 bills. He spends $12.75 on the entrance fee to an amusement park and $8.50 on snacks. How much money does he have left?
What is $3.75
500
748,397 to the nearest thousands
What is 748,000
500
32.073 to the nearest tenths
What is 32.1
500
67.9 + 81.34
What is 150