1. NSW Syllabus
  2. Maths
  3. Stage 3
  4. Numbers and Algebra
  5. Patterns and Algebra
  6. MA3-8NA
  7. Patterns and Algebra 1
  8. Use equivalent number sentences involving multiplication and division to find unknown quantities (ACMNA121)

Identify and use inverse operations to assist with the solution of number sentences, eg 125 / 5 = ( ) becomes ( ) x 5 = 125

1. Addition chains 10 multiples
2. Addition chains 10 multiples
3. 100 zone: 295+8=?, 798+?=804, ?+9=405
4. 100 zone: 294+8=?, 396+?=401, ?+4=705
5. 100 zone: 295+9=?, 596+?=602, ?+8=201
6. 100 zone: 399+5=?, 895+7=902, ?+6=503
7. 100 zone: 698+6=704, 292+?=301, ?+8=503
8. 100 zone: *+95=500 365+*=400 625+75=*
9. 100 zone: *+185=200 655+*=700 335+65=*
10. 100 zone: *+25=300 445+*=500 895+5=*
11. 100 zone: *+45=400 165+*=200 725+75=*
12. 100 zone: *+85=700 405+*=500 375+25=*
13. Number Detectives: Mystery Teens
14. Number Detectives: Mystery Teens
15. Number Detectives: Mystery Teens
16. Number Detectives: Mystery Teens
17. Scoring decimal points: *3.6+*.2=25.*
18. Scoring decimal points: 1*.2+2.7=*9.*
19. Scoring decimal points: 1*.*+2.5=*0.8
20. Scoring decimal points: 2*.2+1.5=*7.*
21. Adding Hundreds 136+*=536 566+200=* 300m/t264=*
22. Adding Hundreds 532+*=732 328+500=* 600m/t119=*
23. Adding 105 254+*=250 421+105=* 105m/t101=*
24. Hundreds to Add - 562+*=667 263+105=* 105m/t714=*
25. Hundreds to Add - 365+*=470 532=105=637 105m/t283=*
26. Scoring Decimal Points: Complete vertical algorithm
27. Scoring Decimal Points: Complete vertical algorithm
28. Scoring Decimal Points: Complete vertical algorithm
29. Scoring Decimal Points: Complete vertical algorithm
30. Decimals get together: 6.7+?=10
31. Decimals get together: ?+3.7=10
32. Adding decimals: Write missing numbers in vertical addition of 2-digit numbers with 1 dp
33. Adding decimals: Write missing numbers in vertical addition of 2-digit numbers with 1 dp
34. Number detectives mystery decimals: 0.02+?, 0.26+?, 0.44+?=1
35. Number detectives mystery decimals: 0.33+?, 0.62+?, 0.84+?=1
36. Number detectives mystery decimals: 0.08+?, 0.15+?, 0.73+?=1
37. Number detectives mystery decimals: 0.29+?, 0.82+?, 0.06+?=1
38. Number detectives mystery decimals: 0.45+?, 0.01+?, 0.22+?=1
39. Decimal Dropouts : Decimal hundredths totalling 1
40. Decimal Dropouts : Decimal hundredths totalling 1
41. Decimal Dropouts : Decimal hundredths totalling 1
42. Decimal Dropouts : Decimal hundredths totalling 1
43. Decimal Dropouts : Decimal hundredths totalling 1
44. Subtraction chains: 87-14-13-15, 98-17-11-6
45. Subtraction chains: 79-14-15-12, 68-17-20-11
46. Subtraction chains: 76-13-12-11, 92-20-12-14
47. Subtraction chains: 94-20-14-11, 65-15-25-15
48. Mysteries of 50!: 50-?=46, 36, 26
49. Mysteries of 60!: 60-?=35, 30, 45
50. Mysteries of 60!: 60-?=40, 30, 20
51. Mysteries of 60!: 60-?=32, 28, 16
52. Mysteries of 50!: 50-?=17, 28, 39
53. Mysteries of 50!: 50-?=33, 8, 24
54. Mysteries of 50!: 50-?=34, 25, 14
55. Mysteries of 70!: 70-?=44, 38, 29
56. Mysteries of 70!: 70-?=58, 33, 9
57. Mysteries of 70!: 70-?=28, 35, 43
58. Subtraction Chains
59. 100 zone: 105-15, 306-8, 109-10
60. 100 zone: 304-7, 400-15, 401-5
61. 100 zone: 400-6, 400-9, 400-11
62. 100 zone: 402-5, 312-15, 314-15
63. 100 zone: 108-9, 111-12, 106-7
64. Decimal Drops: 27.* - 15.3 = 1*.3
65. Decimal Drops: 63.* - 4*.6 = *2.2
66. Decimal Drops: 54.* - 37.7 = *7.1
67. Decimal Drops: 48.8 - 2*.* = *9.5
68. Decimal Drops: 81.4 - 22.* = *9.2
69. Subtraction Chains
70. Subtraction Chains
71. Subtraction Chains
72. Subtraction Chains
73. Subtraction Chains
74. Subtraction Chains
75. Subtraction Chains
76. Subtraction Chains
77. Scoring Decimal Points: Complete vertical algorithm
78. Scoring Decimal Points: Complete vertical algorithm
79. Scoring Decimal Points: Complete vertical algorithm
80. Scoring Decimal Points: Complete vertical algorithm
81. Mysteries of 20: Decimals
82. Mysteries of 20: Decimals
83. Mysteries of 20: Decimals
84. Mysteries of 20: Decimals
85. Mysteries of 20: Decimals
86. Subtraction Chains: 14.8 -2-0.6-0.1, ?-5=20.4,-0.2-5
87. Subtraction Chains: ?-3=15.4, -0.1-8, ?-4-0.5-0.2=9.2
88. Subtraction Chains: ?-4=12.6,-0.5-2, ?-5=15.5,-3-0.2
89. Subtraction Chains: ?-4=14.7,-0.3-4.4, ?-5=11.9,-0.1-0.7
90. Subtraction Chains: ?-4.2=11.5,-1.1-3.3, ?-15.5-3-6.5=6
91. Number Detectives: Subtracting decimals
92. Number Detectives: Subtracting decimals
93. Number Detectives: Subtracting decimals
94. Number Detectives: Subtracting decimals
95. Number Detectives: Subtracting decimals
96. Number Detectives: Subtracting decimals
97. Number Detectives: Subtracting decimals
98. Number Detectives: Subtracting decimals
99. Number Detectives: Subtracting decimals
100. Number Detectives: Subtracting decimals
101. Decimal mysteries 50 -*=11.08,-*=36.15,-*=16.46
102. Decimal mysteries 50 -*=26.33,-*=37.85,-*=1.07
103. Decimal mysteries 50 -*=8.28,-*=22.16,-*=32.77
104. Decimal mysteries 50 -*=21.44,-*=30.53,-*=13.19
105. Decimal mysteries 50 -*=32.65,-*=13.21,-*=24.17
106. Put a number on the yellow box -41.5+23.7+ * =-14.4
107. Put a number on the yellow box -26.7+-15.9+ * =-17.5
108. Put a number on the yellow box -17.6+-11.9+ * =26.2
109. Put a number on the yellow box -10.5+-18.9+ * =12.8
110. Subtraction Chains: Subtractions with 2 dp
111. Subtraction Chains: Subtractions with 2 dp
112. Subtraction Chains: Subtractions with 2 dp
113. Subtraction Chains: Subtractions with 2 dp
114. Big Times: 54 X * = 108
115. Big Times: *1 X 8 = 488
116. Big Times: 53 X * = 106
117. Hit the Big times: 503 x * = **27
118. Hit the Big times: 615 x * = 2*60
119. Hit the Big times: *27 x*= *654
120. Number detectives: 320/?=80
121. Number detectives: 270/?=90
122. Division Chains
123. Division Chains
124. Division Chains
125. Division Chains
126. Division chains: Write missing numbers in division chains
127. Division chains: Write missing numbers in division chains
128. Division chains: Write missing numbers in division chains
129. Division chains: Write missing numbers in division chains
130. Number Quest - complete number sentence
131. Decimals get together: 7.6+?=10
132. Decimals get together: 2.7+7.3=?
133. Decimals get together: ?+1.1=10
134. Decimals get together: 5.4+?=10
135. Decimals get together: ?+5.7=10
136. Decimals get together: 3.8+?=10
137. Decimals get together: ?+7.1=10
138. Decimals get together: 5.9+?=10
139. Decimals get together: ?+6.7=10
140. Tenths Tournament: 1- 0.6
141. Tenths Tournament: 1- 0.5
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