GRADE SIX MATHEMATICS

Answers to Last Week’s Exercises

Exercise 1 1. (Identity) 4. (Associative)

Exercise 2 1. 41 6. 2 192

Hello boys and girls, I hope that you shared last week’s exercises with your friends and teacher. Those addition properties are important for you to remember as well as the Order of Operations. Please Excuse My Dear Aunt Sally – PEMDAS helps you to remember the order of operations.

This week we will do a revision exercise and some divisibility rules. _______________________________________________________________

Revision Exercise 1. Write each number in standard form. (a) 33 …………… .. (b) two million, five thousand ten …………… ..

2. Write in word form. (a) 1 097 ……………………………… . (b) 4 807 138 ……………………………………………………… ..

3.

Compare. Write < , > or = (a) 4 997

. (b) 345 797

4. Insert parentheses ( ) to make each statement true. (a) 10 – 4 + 1 = 7 (b) 8 – 5 + 2 = 1 (c) 2 + 9 – 3 + 4 = 4 (d) 14 – 6 + 1 – 5 = 2

5. 4 927

Explain why these expressions have different values. 15 + (6 - 2) + 1 and 15 + 6 – (2 + 1) …………………………… ... ………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… …………… . …………… ... …………………………………………………… ……… ....………………………………………………………………………

6. What is the value of the 8 in 789 621? Write it in three different ways. (a) face value x place value: ……………… .. (b) value: …………………… .. (c) face value x power of ten ………………………… .

7. The product p of each of these three equations will be the same if the places of two numbers are switched. the A number is exactly divisible by 3 or 9 if sum of the digits is exactly divisible by 3 or 9.