Subtraction using an algorithm

Sal has 845 baseball cards in his collection. Juan has 123 baseball cards in his collection. How many more cards does Sal have than Juan?

• 968

• 722

• 624

• 733

Rachel says that : 54

- 46

12

Is she correct?

• Yes because,

  5-4=1 and 6-4=2

• No because,

  is not 6-4, is 4-6

Sal has 229 baseball cards in his collection. Juan has 96 baseball cards in his collection. How many more cards does Sal have than Juan?

• 273

• 233

• 133

• 315

It is feeding time for the monkeys. You noticed 247 monkeys sleeping on a tree. When they heard the zookeeper opening the gate, 191 monkeys woke up. How many monkeys are still sleeping in the tree?

Which is the correct way to solve this?

• 247-191=?

• 247+191=?

• 191-247=

• 156

It is feeding time for the monkeys. You noticed 348 monkeys sleeping on a tree. When they heard the zookeeper opening the gate, 183 monkeys woke up. How many monkeys are still sleeping in the tree?

• 205

• 145

• 165

• 421

When we use an algorithm we always start________

• Hundreds

• Greatest number

• Ones

• Tens

It is feeding time for the monkeys. You noticed 417 monkeys sleeping on a tree. When they heard the zookeeper opening the gate, 252 monkeys woke up. How many monkeys are still sleeping in the tree?

• 165

• 669

• 245

• 265

The second graders at Emile Elementary are working hard to earn a reward. They have to fill 355 brag board spaces. They have already filled 162 of the spaces. How many more spaces do they still need to fill to earn the reward?

• 213

• 113

• 517

• 193

There are 364 animals in the aquarium. 195 animals are fish, and the rest are stingrays. How many stingrays are in the aquarium?

• 231

• 169

• 109

• 459

Linda collected 673 stamps. Tom collected 265 fewer stamps than Linda.

How many stamps did Tom collect?

• 312

• 418

• 408

• 412