AA-Solving mathematical problems by using the best strategy.
1. Solve by using place value Card 6 (adding the parts)
Rick had 235 marbles and his sister has 187. How many have they got altogether?
2. Solve by using compensation Card 5 (making tidy numbers.)
Sam has 199 stamps in his stamp collection. He gets given his grandmother’s collection which has 239 stamps. How many stamps does he now have?
3. Solve by using reversibility. Card 15 (changing into an addition problem) then jump the number line.
There were 538 sheep in the paddock then the farmer took 142 out into another paddock. How many are left?
4. Solve by using place value. Card 13 or by reversibility. Card 15 then by jumping the number line. Card 2,4
There are 71 lollies in the jar. At the party 37 get eaten. How many are left?
5. Solve by using compensation. Card 8.
Timo is helping out on the water stand at the triathlon. He sets out 507 cups of water. 298 get taken. How many has he got left?
6. Solve by using place value partitioning - (multiply by the tens then the ones)
There are 8 lanes in the swimming pool. If there are 42 races, how many swimmers have swum?
7. Solve by using place value partitioning (use your basic facts of the 6 times tables).
The coach needs to buy snacks for the players in all his teams. The snacks come in packs of 6. If there are 102 players, how many packs does he need to buy?