Based on the "Roald Dahl Maths Challenge Cards" visible in the image, here is the solution to the math problems listed on the card.
Step-by-step Solution:
The card lists several addition and subtraction sums. Let's solve them one by one:
1.
5 + 4 = ?
* Count 5 fingers, then add 4 more.
* $5 + 4 = 9$
2.
10 - 3 = ?
* Start at 10 and count back 3 steps (9, 8, 7).
* $10 - 3 = 7$
3.
6 + 7 = ?
* Start with 7 and count up 6 more (8, 9, 10, 11, 12, 13).
* $6 + 7 = 13$
4.
15 - 8 = ?
* Start at 15 and count back 8 steps. Or think: $8 + ? = 15$. Since $8 + 7 = 15$, then $15 - 8 = 7$.
* $15 - 8 = 7$
5.
12 - 5 = ?
* Start at 12 and count back 5 steps (11, 10, 9, 8, 7).
* $12 - 5 = 7$
6.
9 + 6 = ?
* Start with 9 and count up 6 more (10, 11, 12, 13, 14, 15).
* $9 + 6 = 15$
7.
18 - 9 = ?
* Half of 18 is 9. So if you take 9 away from 18, you have 9 left.
* $18 - 9 = 9$
8.
7 + 8 = ?
* Start with 8 and count up 7 more (9, 10, 11, 12, 13, 14, 15).
* $7 + 8 = 15$
Final Answer:
The answers to the sums on the Roald Dahl Maths Challenge Card are:
* 5 + 4 =
9
* 10 - 3 =
7
* 6 + 7 =
13
* 15 - 8 =
7
* 12 - 5 =
7
* 9 + 6 =
15
* 18 - 9 =
9
* 7 + 8 =
15
Parent Tip: Review the logic above to help your child master the concept of summer maths worksheet.
