1. Solve more difficult number problems mentally

2. 16 48 56 32 24 40 Find the number: -a 2-digit number a multiple of 8
the product of its digits is 30 16 48 56 32 24 40

3. 42 35 Find the number: -between 30 and 50 a multiple of 7
the sum of its digits is 6 42 35

4. 14 42 49 35 28 21 56 63 Find both numbers: 2-digit numbers
multiples of 7
the sum of each number’s digits is 9 14 42 49 35 28 21 56 63

5. (__ + 7) x 6 = 60 3
60 ÷ 6 = 10
10 – 7 = 3

6. (__ x 9) + 8 = 62 6
= 56
56 ÷ 9 = 6

7. (__ ÷ 4) - 3 = 4 28
4 + 3 = 7
7 x 4 = 28