Mental Math
568 + 10
What is 578?
Solve using partial sums.
526 + 342
What is 868?
Solve using open number line.
568 +142
What is 710?
Solve using traditional method.
Stack and solve. 547 + 365
What is 912?
The softball team is collecting boxes of cereal. The 10u girls collected 452 boxes of cereal and the 8u girls collected 359 boxes of cereal. How many boxes of cereal did they collect in all?
What is 811?
691 + 10
What is 701?
Solve using partial sums.
258 + 321
What is 849?
Solve using open number line.
548 + 222
What is 770?
Solve using traditional method.
Stack and solve. 658 + 247
What is 905?
Rohen and Lucas have 9 strings of silver tinsel and 6 strings of gold tinsel. But 2 strings of silver tinsel are broken. How many good strings of tinsel are there in total?
What is 13 strings of tinsel?
547 + 100
What is 647?
Solve using partial sums.
475 + 328
What is 803?
Solve using open number line.
495 + 125
What is 620?
Solve using traditional method.
Stack and solve. 528 + 369
What is 897?
For the food drive, Mrs. MacLellan's class collected 247 cans of food, Mrs. Vendittelli's class collected 236 cans of food, and Ms. Succurro's class collected 278 cans of food. How many cans of food did they collect in all?
What is 761 cans of food?
392 + 10
What is 402?
Solve using partial sums.
648 + 169
What is 817?
Solve using open number line.
663 + 230
What is 893?
Solve using traditional method.
Stack and solve. 457 + 439
What is 896?
Sabina read 21 pages of my novel book yesterday in just 45 minutes. Today, I read 117 pages. What is the total number of pages Sabina read?
What is 138 pages?
963 + 100
What is 1063?
Solve using partial sums.
478 + 457
What is 935?
Solve using open number line.
689 + 124
What is 813?
Solve using traditional method.
Stack and solve. 289 + 146
What is 435
When Molly was 14, she had 14 candles on her birthday cake. 5 girls came to her birthday party that year. This year, Molly had 6 more candles on her birthday cake. How old is Molly now?
What is 20 years old?