| Problem | Answer | Problem | Answer |
|---|---|---|---|
| 11 + 10 = | 17 + 8 = | ||
| 15 + 14 = | 20 + 12 = | ||
| 18 + 17 = | 26 + 11 = | ||
| 32 + 7 = | 24 + 18 = | ||
| 25 + 19 = | 24 + 22 = |
| Problem | Answer | Problem | Answer |
|---|---|---|---|
| 19 โ 10 = | 24 โ 18 = | ||
| 28 โ 22 = | 32 โ 9 = | ||
| 35 โ 7 = | 37 โ 25 = | ||
| 40 โ 17 = | 43 โ 9 = | ||
| 45 โ 27 = | 48 โ 20 = |
| Problem | Equation | Answer |
|---|---|---|
| A library shelf had 44 books. 16 were checked out. How many are left? | ||
| Mo saw 13 gulls and 28 ducks at the lake. How many birds did he see? | ||
| A jar had 36 marbles. 14 were taken out. How many marbles are left? |
| Equation | Missing Number |
|---|---|
| 17 + โ = 35 | |
| โ + 16 = 38 | |
| 45 โ โ = 28 | |
| โ โ 11 = 19 | |
| 21 + โ = 47 | |
| โ โ 19 = 21 |