Add Tens
20+30
50
30-10
20
5 tens 0 ones
8+10
18
Ada did 10 math problems. Deekshita did 20 math problems. How many math problems did they both do?
30 math problems
40+40
80
50-30
20
4 tens 3 ones
43
6+7
13
Braelyn got 10 green points. Asher got 20 green points. How many more green points did Asher get than Braelyn?
10 green points
90+10
100
60-30
30
0 tens 3 ones
3
12-4
8
Rishit ate 30 french fries. Gracelynn ate 20 french fries. How many french fries did they eat?
50 french fries
70+40
110
100-90
10
10 tens 1 one
101
15-6
9
Leia and Ruhaan made 40 paper airplanes. Leia made 10 paper airplanes. How many did Ruhaan make?
30 paper airplanes
80+40
120
120-30
90
12 tens 0 ones
120
9+8
17
Santiago rode his bike 20 miles away. Then he rode his bike back home. How many miles did Santiago travel altogether?
40 miles