The answer to a subtraction problem is called the...
Difference
100
What is the inverse operation of addition?
Subtraction
100
608-45=?
563
100
When I do not need an exact answer, I can ________ to find one that is close.
Round
200
When I ___________, I take away the lesser number from the greater number.
Subtract
200
There are 365 days in one year. There were 173 sunny days this year. Write a number sentence to find the number of days that were not sunny.
365-173=192; 192 days
200
What is the inverse operation of division?
Multiplication.
200
973-390=?
583
200
Estimate! 765-121; tens
770-120=650
300
I can ________ to trade equal amounts when renaming a number.
Regroup
300
In which month were fewer raffle tickets sold? Explain. (Refer to page 181)
April. The total sales for March were $7,106. The total sales for April $7,104. $7,104<$7,106.
300
500-130=? Check your answer with addition.
370. 370+130=500.
300
653-227=?
426
300
Round 1678 to the nearest tens and hundreds.
Tens, 1,680. Hundreds, 1,700.
400
A number sentence in which one quantity is taken away from another quantity is a ________ _______.
Subtraction sentence
400
Students want to make 425 get well cards. So far they have made 165 cards. How many more cards do they need to make?
260 cards.
400
$3,568-$639=?
$2,929.
400
Of the 365 days this year, it rained 119. How many days did it not rain? 365-119=?
246
400
Exact or estimate answer? Tanisha bought a pack of 225 sheets of paper for her homework. After a week, she had 198 sheets of paper left. How many sheets of paper did she use?
Exact
500
Two operations that can undo each other, as in addition and subtraction, are called ________ __________.