Do I Need to Regroup?
46 - 15 = ?
Jackie has 28 cupcakes. She gives 17 to CJ. How many cupcakes does Jackie have now?
Show your work & solve.
28 - 17 = 11 cupcakes
Solve:
49 + 18 = ?
49 + 18 = 67
Chris has 78 dogs. He sells 38 to Leland. Then, he sells 38 more. How many dogs does Chris have now?
Show your work & solve.
78 - 38 = 40
40 - 38 = 2 dogs
When is our math test?
Monday
92 - 49 = ?
Yes
Joseph gets 78 dojo points for being awesome. He spends 25 to change is avatar. How many dojo points does he have left?
Show your work & solve.
78 - 25 = 53 dojo points
Solve:
52 + 32 = ?
52 + 32 = 84
Valerie has 57 cats. She feed 27 cats. Then she feeds 10 cats. How many cats are left to feed?
Show your work & solve.
57 - 27 = 30
30 - 10 = 20 cats
What math topic are we in?
topic 6
49 - 19 = ?
No
JoJo and Alex are at the beach. JoJo collects 72 shells. Alex collects 48 fewer. How many shells does Alex collect?
Show your work & solve.
72 - 48 = 24 shells
Solve:
28 + 73 = ?
28 + 73 = 101
Kevin bakes 84 cakes for a birthday party. He eats 28 cakes. Then he bakes 15 more. How many cakes does Kevin have now?
Show your work & solve.
84 - 28 = 56
56 + 15 = 71 cakes
What is the name of our classroom Elf?
Snowy
a: 49 - 15 = ?
b: 64 - 34 = ?
c: 96 - 46 = ?
d: 75 - 58 = ?
e: 65 - 29 = ?
d, e
Bruck is making pizza. He makes 64 pizzas. Camila buys 38 pizzas. How many pizzas are left?
Show your work & solve.
64 - 38 = 26
Solve:
62 + 29 = ?
62 + 29 = 91
Sulayman and Amarii are bowling. Together get 49 points. Then Cam joins and gets 38 points. How many more points are needed to get a score of 99?
Show your work & solve.
49 + 38 = 87
99 - 87 = 12 more points
What is the vocabulary word for when we make groups of 10?
regroup
a: 49 - 45 = ?
b: 97 - 15 = ?
c: 62 - 49 = ?
d: 71 - 64 = ?
a, c, d
Hunter needs to sharpen 93 pencils for art. So far he sharpened 57. How many are left to sharpen?
Show your work & solve.
93 - 57 = 26
Solve:
142 + 536 = ?
142 + 536 = 678
Richard and Patrick are making slime. They made 100 gallons of slime. They sold 40 gallons to Amira. Then they sell 47 gallons to Sufyan. How many gallons are left?
Show your work & solve.
100 - 40 = 60
60 - 47 = 13 gallons of slime
What are the 3 strategies we've been practicing in this topic?
1.
2.
3.
2. partial differences
3. up and down method