# Step 4

Difficulty 4

 1 First Things First!: BODMAS calculations 2 First Things First!: BODMAS calculations 3 Sum it up: Put the correct number statement on the question board 4 Sum it up: Put the correct number statement on the question board 5 Sum it up: Put the correct number statement on the question board 6 Number detectives: Decimal multiplication 7 Number detectives: Decimal multiplication 8 Number detectives: Decimal multiplication 9 Number detectives: Decimal multiplication 10 Number detectives: Decimal multiplication 11 Granny squares 25 x 15 12 Water the Vines: 16 rows of vines x 110 metres 13 Granny Annie's kitchen stools: How many chairs and how many stools=18 legs? 14 Legal Eagles Coffee Shop: \$7500x12 = \$? 15 Birds of a feather: Multipy cm, convert to metres 16 It's a long way to the concert: Money addition and multiplication 17 Water on tap: Calculate time from flow rate 18 Maths production: Complete each number sentence 19 Maths production: Complete each number sentence 20 Maths production: Complete each number sentence 21 Maths production: Complete each number sentence 22 Maths production: Complete each number sentence 23 Same or different: Click all the boxes with the same answer 24 Same or different: Click all the boxes with the same answer 25 Same or different: Click all the boxes with the same answer 26 Same or different: Click all the boxes with the same answer 27 Multiplication Simplification: Use doubling and halving to simplify multiplication 28 Multiplication Simplification: Use doubling and halving to simplify multiplication 29 Multiplication Simplification: Use doubling and halving to simplify multiplication 30 Multiplication Simplification: Use doubling and halving to simplify multiplication 31 Times Machine: 12 34 23 87 32 Times Machine: 5.6 7.7 4.2 2.1 33 About to divide 2423/40 34 About to divide 3198/80 35 About to divide 8068/90 36 About to divide 4856/80 37 Number detectives: Division language (quotient) 38 Number detectives: Division language (quotient) 39 Divide hundreds: Division of 3-digit hundreds multiples 40 Divide a hundred 90 and 80 41 Degrees of heat: How many times hotter is the Earth's inner core than the upper mantle? 42 Rolling rivers: Compare the length of the Nile with the length of the Murrumbidgee 43 Go green: Average number of trees planted per week 44 Sum it up: Put the correct number statement on the question board 45 Sum it up: Put the correct number statement on the question board 46 Pay up!: Calculate fortnightly pay from annual salary 47 Plant division: Average monthly turnover 48 Up or down: Decide whethere it is sensible to round up or down after division 49 Up or down: Decide whether it is sensible to round up or down after division 50 Up or down: Decide whether it is sensible to round up or down after division 51 Number detectives: Examining the remains (division with remainder) 52 Number detectives: Examining the remains (division with remainder) 53 Number detectives: Examining the remains (division with remainder) 54 Divide and rule: Use halving as a strategy to simplify division 55 Divide and rule: Use halving as a strategy to simplify division