Adding with Regrouping
52+65
117
25-16
9
Helen baked 435 chocolate chip cookies yesterday and 139 cookies this morning. How many cookies did Helen bake?
435 + 139 = 574 Helen baked 574 cookies.
Round to the nearest 10 and add.
15+32
20+30=50
35+20=55
64+25
89
36-27
9
Pinky made 147 miniature pumpkin pies for everyone and Helen made 56. How many miniature pies do they have in total?
147 + 56 = 203 There 203 miniature pumpkin pies in total.
Round to the nearest 100 and add.
879+182
900+200=1,100
45+62
45+62=107
89+27
116
92-75
17
At the river, 25 out of 55 salmon families went to warmer waters to avoid being frozen. They had to swim 125 miles to get there! How many salmon families were left in the river?
55 – 25 = 30 30 salmon families were left in the river.
Round to the nearest 100 and add.
784+652
800+700=1,500
78-50
78-50=28
128+165
293
146-98
48
During Halloween, Wendy was able to get a lot of candies from trick or treating. She decided to give away some of them to 3 homeless kids nearby. If she has 60 candies and gave away 40, how many does she have left?
60 – 40 = 20 Wendy has 20 candies left.
Round to the nearest 100 and round.
925+256
900+300=1,200
89-40
89-40=49
356+489
845
385-266
119
Janine owns a catering service company. She was hired to cater for the mayor’s 50th birthday. For the appetizers, she needs to make 750 mini meat pies. She divided her crew into 3 teams. If the first team made 235, and the second made 275, how many pies should the third team make?
First, 235 + 275 = 510; then, 750 – 510 = 240 The third team should make 240 more mini meat pies
Round to the nearest 100 and add.
489+489
500+500=1,000
25+30-40
25+30=55
55-40=15