Show:
Words
Subtracting Patterns
Estimate the Answer
Regrouping
Check it out or TMI
100
when you change a number to the nearest ten it is called this
What is rounding?
100
9 tens minus 3 tens
What is 6 tens?
100
Estimate: 41-29=
What is about 10?
100
Regroup or not regroup......then answer 53-19=
What is yes and 34?
100
This is the add to check fact for 37-19=
What is 18 + 19=37
200
an operation that is performed with rounded numbers to get an idea of the actual, but not exact answer
What is estimating?
200
Another name for ten tens
What is 100?
200
Estimate 58-31=
What is about 30?
200
Regroup or not regroup......then answer 79-25=
What is no and 54?
200
The add to check fact for 60-26=
What is 26 + 34 = 60?
300
the answer to a subtration problem
What is the difference?
300
29-10
What is 19?
300
Estimate 39 - 4
What is about 40?
300
Regroup or not regroup......then answer 57-38=
What is yes and 19?
300
The add to check fact for 65-48 =
What is 48 + 17 = 65?
400
Name two out of the three sayings we learned in this chapter to help us with subtracting and adding to subtract
What are "Bigger Bottom Better Borrow," "Bigger Top No Need to Stop," and "Add the Bottom Two to Check for You?"
400
47-20=
What is 27?
400
Estimate 99 - 32=
What is 70?
400
Regroup or not regroup......then answer 43 cents- 14 cents=
What is yes and 29 cents?
400
Name the extra information in this problem and then solve the problem. Remember the label. Andrew can lift a 33 pound bag of jelly beans. Addie can lift a 35 pound bag of Jolly Ranchers. Colin can lift a 42 pound bag of jelly beans. How many more pounds of jelly beans can Colin lift than Andrew?
What is Addie can lift a 35 pound bag of Jolly Ranchers, as the extra information and 9 pounds of Jolly Ranchers more as the answer?
500
this is the top number in a subtaction problem and the middle number of the subtraction problem
What are minuend and the subtrahend?
500
272-50=
What is 222?
500
Estimate 121 - 19=
What is about 100?
500
Regroup or not regroup......then answer 151 cents - 42 cents =
What is yes and 109 cents?
500
Name the extra information in this problem and then solve the problem. Remember the label. Jake had 82 invitations to the prom. Luke asked 56 girls to the prom (Silly children, did you think he would ask puppies?) Jayson had 47 invitations to the prom. How many more invitations did Jake receive than Jayson?
What is Luke asked 56 girls to the prom (Silly children, did you think he would ask puppies?) as the extra information and 35 invitations as the answer?