1. 9 x 14 9 x 12 Calculate the value of the following: 1 4 × 12 =
Starter: Answer the questions below in your books
Calculate the value of the following:
1 4 × 12 =
(9 - 3) × 8 =
(36 ÷ 3) × (26 – 15) =
8 × (48 ÷ 6) =
20 × 19 =
25 × 112 =
9 x 14
9 x 12

2. 9 x 14 9 x 12 Mark the starter: 1 4 × 12 = 48 (9 - 3) × 8 = 48
Starter: Answer the questions below in your books
Mark the starter:
1 4 × 12 = 48
(9 - 3) × 8 = 48
(36 ÷ 3) × (26 – 15) = 132
8 × (48 ÷ 6) = 64
20 × 19 = 380
25 × 112 = 2800
9 x 14
9 x 12

3. 144 Finding the square root of a number
Split prime factors into equal amounts
144
Find the prime factors of a number
Split the prime factors into two equal amounts.
Check the square roots using a calculator.

4. Split the following into prime factors
Split the following into prime factors. Divide the prime factors into two equal columns. Multiply the numbers in one of the columns to find the square root of the original number. Check it on your calculator.
225
1024
729
5184
3136

5. The answers are next…

6. 225 = 25 × 9 = 5 × 5 × 3 × 3 so these split into two piles of 5 × 3 = 15
3136 = 16 × 196 = 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 so these split into two equal piles of 2 × 2 × 2 × 7 =56