Level 1
Estimate the product of 35972 and 63 by first rounding off the bigger number to the nearest thousand and the smaller number to the nearest ten.
Level 2 PSLE The figure shows three boxes A, B and C on a balance scale. The average mass of the three boxes is 250 g. The mass of B is a 2-digit number. What is the smallest possible difference between the mass of A and B?
Level 2 PSLE The figure shows three boxes A, B and C on a balance scale. The average mass of the three boxes is 250 g. The mass of B is a 2-digit number. What is the smallest possible difference between the mass of A and B?