Using mental math (no white board) solve 25+28. Explain what strategy you used.
What is 53. Student explanation
100
2 x 16 =
What is 32
100
Mrs. Bumgardner has 72 square feet of floor in her living room. She would like to cover it with a rug. Name 1 length and widths her rug could be if she wants the whole floor covered.
What is 8 x 9
36 x 2
100
Alex was beginning a photography business and needed pictures to put on her website. She took 34 pictures of families, 23 pictures of family pets and 12 pictures of zoo animals. She only placed 29 of the pictures on her website. How many did not end up on her web site?
What is 40
100
round 17 to the nearest 10
What is 20
200
Solve using mental math 99+98. Explain what strategy you used.
What is 197. explain strategy
200
90 divided by 15
What is 6
200
Mrs. B bought dog treats for her 3 dogs. If the box has 28 treats how many will each dog get?
What is 9 R1
200
Bryce is selling popcorn for Boy Scouts. He sold 23 bags of cheddar corn and 10 bags of caramel corn. To get his badge he needs to sell 50 bags total. How many more bags does he need to sell?
What is 17
200
round 126 to the nearest hundred
What is 100
300
Using mental math solve 128 + 142=
What is 270. explain strategy
300
72 divided by 7
What is 10 with R 2
300
Emily has a Teddy Bear collection with 137 Teddy Bears. If her aunt gives her 98 more how many does she have?
What is 39
300
Caden, Quinn and Nolan got together to trade baseball cards. Caden had 3 packs with 9 cards in each pack. Nolan had 4 packs with 9 cards in each pack. When Quinn put his cards in there were 121 cards altogether. How many cards did Quinn bring?
What is 58
300
Round 1,234 to the nearest 10
What is 1,230
400
Use mental math to solve 123-59. Explain your strategy
What is 64. Explain strategy
400
30 x 60
What is 1800
400
Claire Bob read 36 chapters over 9 nights. How many chapters did she read each night?
What is 4
400
Naomi has a cleaning business. In November she earned $114. In December she earned $98. In January she earned $101. In February she went shopping and spent $263. How much money does she have left?
What is 50
400
Round 3,267 to the nearest 10 and 100
What is 3,270 and 3,300
500
Solve using mental math 1000-671. Explain the strategy you used.
What is 329. Explain strategy
500
90 x 300
What is 27,000
500
Andy played baseball for 16 years. He hit 45 home runs each year. How many home runs did he hit in all?
What is 720
500
Madison played on her mom's phone for 57 minutes. She played Angry Birds for 15 minutes, watched music videos for 18 minutes and played Fruit Ninja the rest of the time. How long did she play Fruit Ninja?