Decimal number bonds to 1 and 10 (1dp and 2dp)
What number adds to 0.4 to make 1?
Answer: 0.6
How many grams are in 2 kg?
Answer: 2000 g
Is 7 a prime number?
Answer: Yes
What is 5²?
Answer: 25
Find the factors of 12.
Answer: 1, 2, 3, 4, 6, 12
What number must be added to 3.7 to make 10?
Answer: 6.3
Convert 50 cm to metres
Answer: 0.5 m
Which of these is prime: 9, 11, 15?
Answer: 11
What is 9²?
Answer: 81
List the factor pairs of 20
Answer: (1, 20), (2, 10), (4, 5)
Find the missing number: 1 − 0.68 = ___
Answer: 0.32
Convert 3000 ml to litres.
Answer: 3 l
List all prime numbers less than 10.
2, 3, 5, 7
What is the square root of 36?
Answer: 6
How many factor pairs does 18 have?
3 pairs — (1, 18), (2, 9), (3, 6)
Find the missing number: 10 − 6.45 = ___
Answer: 3.55
Convert 4500 g to kg.
Answer: 4.5 kg
Identify which numbers are prime: 12, 13, 17, 18
Answer: 13, 17
What is 11²?
Answer: 121
Find all factor pairs of 36.
Answer: (1, 36), (2, 18), (3, 12), (4, 9), (6, 6)
A number added to 2.37 equals 10. What is the number?
Answer: 7.63
Convert 2.75 m to centimetres.
Answer: 275 cm
List all prime numbers up to 20.
Answer: 2, 3, 5, 7, 11, 13, 17, 19
A number has a square of 144. What is the number?
Answer: 12
A number has factor pairs (1, 48), (2, 24), (3, 16), (4, 12), (6, 8). What is the number?
Answer: 48