# Step 4

Difficulty 4

 1 In the cube C/R216 + C/R64 + 3cubed 2 In the cube C/R* + C/R512 + 5cubed = 143 3 In the cube C/R343 + C/R* + 4cubed = 73 4 In the cube C/R1 + C/R* + 8cubed = 522 5 In the cube C/R27 + C/R125 + *cubed = 224 6 Number detectives sum of 4x3 and 3x11 7 Number detectives *x-9=-45 8 Show times: Money multiplication 9 Weighed down: Measure multiplication 10 Times to Plough: Multiply lengths of time 11 Multipication Simplification: Simplify multiplication by doubling and halving 12 First things first!: BODMAS calculations 13 Decimal times: Write missing numbers in vertical decimal multiplication 14 Detective Duck finds the mystery suspect: Understand multiplication terminology 15 Detective Duck finds the mystery suspect: Understand multiplication terminology 16 Detective Duck finds the mystery suspect: Understand multiplication terminology 17 Detective Duck finds the mystery suspect: Understand multiplication terminology 18 Detective Duck finds the mystery suspect: Understand multiplication terminology 19 Find the Mystery Number: Solve multiplication sentences with a symbol for an unknown number 20 Find the Mystery Number: Solve multiplication sentences with a symbol for an unknown number 21 Find the Mystery Number: Solve multiplication sentences with a symbol for an unknown number 22 Find the Mystery Number: Solve multiplication sentences with a symbol for an unknown number 23 Find the Mystery Number: Solve multiplication sentences with a symbol for an unknown number 24 Find the Mystery Number: Solve multiplication sentences with a symbol for an unknown number 25 By the skin of those teeth: Calculate distance and speed 26 Ee-i-ee-i-o!: Calculate total number of animals after 2 seasons 27 Out on a limb: Money multiplication 28 Sum it up: Penny and Posie 29 Sum it up: Ladies' Society For Long Lunches 30 Square it: Square 1.5,-0.15 31 Square it: Square 1.6,-16 32 Square it: Square 0.21,-0.21 33 Square it: Square 18,1.8 34 Square it: Square 0.22,2.2 35 Multi-Multiplication 27 (x7,0.5,60,104) 36 Multiplication Simplification: Use doubling and halving to simplify multiplication 37 Multiplication Simplification: Use doubling and halving to simplify multiplication 38 Multiplication Simplification: Use doubling and halving to simplify multiplication 39 Multiplication Simplification: Use doubling and halving to simplify multiplication 40 Multiplication Simplification: Use doubling and halving to simplify multiplication 41 Appearance money: Money subtraction and division 42 Shoes shine: Money multipication and subtraction 43 Spectacular spending: Money multiplication 44 Land of the long vacation: Dollar exchange rates 45 First things first!: BODMAS calculations 46 First things first!: BODMAS calculations 47 First things first!: BODMAS calculations 48 First things first!: BODMAS calculations 49 First things first!: BODMAS calculations 50 First things first!: BODMAS calculations 51 First things first!: BODMAS calculations 52 First things first!: BODMAS calculations 53 Decimal Times: Write missing numbers in vertical multiplication 54 Decimal Times: Write missing numbers in vertical multiplication 55 Decimal Times: Write missing numbers in vertical multiplication 56 Decimal Times: Write missing numbers in vertical multiplication 57 Number detectives : 32÷40 58 My fair sharer: / 0.8 59 True or False: 20.8/2.5=8.5 60 True/false: -30.6 / -0.3 = 102 61 Divide hundreds! 360/*=900, 420/0.3=* 62 Division chains: Write missing numbers in division chains 63 Same or Different? Click all boards where the answer is the same 64 Dances with dogs: Money division 65 A whizz-bang show: Money multiplication and division 66 First things first!: BODMAS calculations 67 The Great Divide: Perform multiple division operations 68 The Great Divide: Perform multiple division operations 69 Detective Duck finds the mystery suspect: Understand division terminology 70 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 71 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 72 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 73 True or False: 1980/44=45 74 True or False: 792/0.44=1800 75 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 76 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 77 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 78 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 79 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 80 Find the Mystery Number: Solve division sentences with a symbol for an unknown number 81 Divide a hundred 216/*=2400, 312/0.06=* 82 Divide a hundred 136/*=-340, 512/-0.8=* 83 Divide a Thousand 3660/-0.04=* 84 Divide a Thousand 5058/-0.06=* 85 Divide Ten Thousand 42600/300=* 86 Divide Ten Thousand 39 200/700=* 87 Division Chains: Write missing numbers in division chains 88 Division Chains: Write missing numbers in division chains 89 Division Chains: Write missing numbers in division chains 90 Sum it up: Granny Smith's knitting 91 Sum it up: Max's Xtreme Skateboards 92 Maths Production 800,8,56 93 Number Production 1.6,320,8 94 Same or different: click all the boxes with the same answers 95 Same or different: click all the boxes with the same answers 96 First things first!: BODMAS calculations 97 First things first!: BODMAS calculations 98 First things first!: BODMAS calculations 99 Up or down: Determine whether to round up or down to give a sensible division answer 100 Up or down: Determine whether to round up or down to give a sensible division answer 101 My Fair Sharer: Write correct division setting 102 My Fair Sharer: Write missing inputs and outputs 103 My Fair Sharer: Write missing inputs and outputs 104 Examining the remains 105 Examining the remains 106 Examining the remains 107 Find the roots *=-0.6, *=6 108 Find the roots *=9, *=-0.09 109 Find the roots *=-0.4, *=-40 110 About to divide: click the best estimate 111 About to divide: click the best estimate 112 About to divide: click the best estimate 113 The Great Divide: Multiple divisions 114 Find the roots * = -0.6, * = -0.06 115 Find the roots * = -0.3, * = -0.03 116 Find the roots *= -0.04, * = 0.4 117 Head Quarters: One half & one quarter of 62940 118 Head Quarters: One half & one quarter of 49380