subtraction w/regrouping
What is 78 - 29?
49
means "added to"
What is plus +?
Mrs. Vincini has 43 Hi-Chews. She gave away 28. How many are left?
15 Hi-Chews.
How can I use addition to check this problem:
24 - 10 = 14
14 + 10 = 24
A story has 32 pages. Addison Woods reads 10 pages on Monday and 12 pages on Tuesday. How many pages did she read in all?
How many are still left?
22 pages
10 pages are left
What is 31 - 17?
14
Means "is the same as."
Sadie walked her dog 25 blocks. She turned around to head home. She walked 15 blocks. How many blocks does she still need to walk?
10 blocks
How can I use addition to check:
30 - 12 = 18
18 + 12 = 30
Sofia made 25 posters on Wednesday and 12 on Thursday. How many did she make in all?
If she gave 13 away, how many are left?
37 posters
24 posters
What is 87 - 28?
59
The amount in all after you add.
What is the sum?
Claire and Fiona each read 8 books over winter break. How many books did they read in all?
16 books.
How can I use addition to check:
21 - 9 = 12
12 + 9 = 21
Shawn made 14 bookmarks for the class on Monday and 14 bookmarks on Tuesday.
How many does he hall in all?
On Wednesday, he gives 10 away. How many are left?
28 bookmarks
18 bookmarks are left.
What is 21 - 7?
14
When you do this, you find out how many are left or which group has more.
What is subtract?
Room 104 has 28 students. If each student gets 2 caterpillars to observe, how many caterpillars will there be in all?
56 caterpillars
How can I use addition to check:
65 - 15 = 50
50 +15 = 65
If he eats 2 pieces of gum, how many are left?
79 pieces of gum
77 pieces of gum are left
What is 80 - 27?
When you do this, you can trade 10 ones for 1 ten....or 1 ten for 10 ones.
What is regrouping?
10 goals.
How can I use addition to check:
72 - 19 = 53
53 + 19 = 72
Sophie has $19.00. She makes $7.00 doing her chores. How many dollars does she have in all?
She uses $10.00 to buy an LOL doll. How many dollars are left?
$26.00
$16.00