Eloi originally had 16 balls. His brother gave him 8 more balls, so he had 24 balls total. Then Eloi lost 3 balls at the park. So to calculate how many balls Eloi has left, we start with the 24 balls total, subtract the 3 lost balls, and get 21 balls remaining.

1. EL PROBLEMA DE
LA SETMANA
FET I PENSANT PER L’ELOI

2. L’ ELOI TÉ 16
BALES

3. EL SEU
GERMÀ N’ HI
REGALA 8

4. ARA L’ ELOI TÉ 24 BALES

5. L’ ELOI HA ANAT AL PARC I
N’ HA PERDUT 3

6. QUANTES BALES LI
QUEDEN A L’ ELOI ?

7. RESULTAT:
16 BALES
+ 8 BALES
24BALES
24 BALES
- 3 BALES
21 BALES

8. LI QUEDEN 21 BALES