Vocabulary
Any of the numbers that are added together are called?
(ex: 2 + 2 )
addend
213+179=
329
324-199=
125
Jessica, Annie’s best friend, is hosting the party. She plans on making pizza for everyone. If she bought 15 pieces of pepperoni, 10 pieces of salami and 30 pieces of bacon as ingredients, how many pieces of meat did she buy in total?
55
What strategy is shown
926+ 234
⇩ ⇩
900+ 200 = 1,100
Estimation
the result of subtracting one number from another
difference
409+220=
629
420-225=
195
Andrew, Annie’s other friend, was assigned with the preparation of appetizers. He decided to bring 30 hotdogs on sticks, 20 pieces of bite-sized cheese pops and 40 pieces of chicken nuggets. How many portions of appetizers did Andrew bring in all?
90
What strategy is shown
324+250 =
300+250
20+550
4+ 570
Decompose to add
to create a number by putting together other numbers
compose
717+ 339
1,056
897-755=
142
Annie’s mother has also been asked to be a part of the surprise. She was tasked to be in charge of drinks. She bought 15 cans of pop and made 25 glasses of orange juice, 15 glasses of grape juice and 5 glasses of apple juice. How many glasses of juice would there be?
45
What strategy is shown
(27 + 53) + 40 =
80+40 = 120
Associative property
the result of adding two or more numbers together
sum
682+544=
1.226
1,250-387=
863
The swamp area is home to a few dangerous animals. Penny’s teacher pointed out 22 crocodiles, 23 alligators and 5 vipers. How many dangerous animals did the teacher point out in total?
50
What strategy is shown
3 + 4 = 7
4 + 3 =7
Commutative property
to break a number apart into multiple numbers
decompose
1,224+2,988=
4,212
5,324-2,786=
2538
After the aviary was the zoo’s swamp area. Penny counted a total of 55 tree frogs, 10 poison frogs and 13 wood frogs. How many frogs was Penny able to count?
78
What strategy is shown
316 + 123 =
300+ 100 = 400
10+20 = 30
6+3 = 9
Answer - 439
Partial Sums