P – AS – OE13
The estimated sum of two numbers is 900. What could the two numbers be?P – AS – OE14
Six different digits are used to make two 3-digit numbers. What is the sum of these two numbers?P – AS – OE15
Four different digits are used to make two 2-digit numbers. What is the difference between these two numbers?P – AS – OE16
How does knowing what 9 + 4 equals help with solving 13 – 5?Page 117 of 139