Order of Operations
31 - 6 + 10= ?
35
Solve using mental math (record your steps): 498 + 99
500+ 100 = 600; 600-3 = 597
Rishi and Peter A. have $1,309 together. Peter has $673. How much does Rishi have? (Remember to TTQA!)
Rishi has $636.
84 x 30
2,520
76 / 23
3 R.7
2 + 7 x 10 = ?
72
Solve using mental math (record your steps): 99 x 8
100 x 8 = 800; 800-8 = 792
Eliot's backpack's mass is 18 kg less than Mac's backpack's mass. The two backpacks have a total mass of 250 kg. What is Eliot's backpack's mass?
Eliot's backpack's mass is 116 kg.
2,650 x 60
159,000
95 / 64
1 R. 31
3 x (9 + 2) - 42 / 7
27
Solve using mental math (record your steps): 417-99
417 - 100 = 317; 317 + 1 = 318
Clara, Peter S., and Audrey shared $1,458 equally. Clara used part of her share to buy a bicycle and had $139 left. What was the cost of the bicycle?
The bike cost $347.
392 x 44
17,248
301 / 24
12 R. 13
Rewrite this equation using the Distributive Property: 9 x 23
9 x (20+3)
Solve using mental math (record your steps): 76 x 49
76 x 50 = 3,800; 3,800 - 76 = 3,724
Emme picked 357 lemons the first day. Griffin picked 497 lemons the next day. Then Charlotte packed the lemons in bags of 12. How many lemons did they have left over?
They had 2 lemons left over.
3,143 x 67
210,581
1,290/80
16 R.10