Add and subtract integers using mental and written strategies

1. 10 000 less, 1000 more than 9 630 258
2. Add hundreds: 346 + 400, 1426 + 500, 200 + 7019
3. Adding hundreds: Multiple operations with hundreds numbers
4. Adding hundreds: Multiple operations with hundreds numbers
5. Adding hundreds: Multiple operations with hundreds numbers
6. Adding hundreds: Multiple operations with hundreds numbers
7. Number detectives: Add/subtract hundreds numbers
8. Number detectives: Add/subtract hundreds numbers
9. Number detectives: Add/subtract hundreds numbers
10. Number detectives: Add/subtract hundreds numbers
11. Number detectives: Add/subtract hundreds numbers
12. Give or take a thousand: 283 557+4000
13. Give or take a thousand: 7000 more than 456 821
14. Give or take a thousand: Add 8000 and 197 523
15. Give or take a thousand: Sum of 7000 and 197 237
16. Give or take a thousand: Sum of 128764 and 6000
17. Give or take a thousand: 164849 more than 7000
18. Give or take a thousand: 345 219 greater than 7000
19. Give or take a thousand: Sum of 349 285 and 4000
20. Give or take a thousand: Add 319 564 to 3000
21. Give or take a thousand: 7000 more than 63 489
22. Give or take a thousand: 8000 more than 49 735
23. Changing numbers: 36 159 add 100 add 1 add 10
24. Changing numbers: 23 855 add 100 add 1 add 10
25. Changing numbers: 36 052 add 1000 add 1 add 10
26. Changing numbers: 23 615 add 1000 add 100 add 10
27. Changing numbers: 36 925 add 10 add 1000 add 1
28. Use the Pattern: 43 + 39, 43 + 40, 430 + 400
29. Use the Pattern: 56 + 70, + 69, 560 + 700
30. Use the Pattern: 34 + 80, + 79, 340 + 800
31. Use the Pattern: 27 + 90, + 89, 270 + 900
32. Use the Pattern: 62 + 79, 62 + 80, 620 + 800
33. Add It Up: Addition of 4-digit numbers with regrouping
34. Add It Up: Addition of 4-digit numbers with regrouping
35. Add It Up: Addition of 4-digit numbers with regrouping
36. Add It Up: Addition of 4-digit numbers with regrouping
37. Add It Up: Addition of 4-digit numbers with regrouping
38. Add It Up: Addition of 4-digit numbers with regrouping
39. Add It Up: Addition of 4-digit numbers with regrouping
40. Add It Up: Addition of 4-digit numbers with regrouping
41. Add It Up: Addition of 4-digit numbers with regrouping
42. Add It Up: Addition of 4-digit numbers with regrouping
43. Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers
44. Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers
45. Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers
46. Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers
47. Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers
48. Add board: Write missing numbers in vertical addition of 2- and 3-digit numbers
49. Use the pattern 6+7 60+70 160+170
50. Use the pattern 12+8 120+80 1200+800
51. Use the pattern 21+9 210+90 2100+900
52. Use the pattern 3+8 30+80 300+800
53. Use the pattern 16+4 160+40 1600+400
54. Number detectives Three's a breeze: 31+29+*=87
55. Number detectives Three's a breeze: 42+12+*=74
56. Number detectives Three's a breeze: 18+22+*=81
57. Number detectives Three's a breeze: 56+21+*=88
58. Number detectives Three's a breeze: 27+23+*=58
59. Same or different : Click all the boxes with the same answer.
60. Same or different : Click all the boxes with the same answer.
61. T/f Double sided eqns
62. T/f Double sided eqns
63. T/f Double sided eqns
64. T/f Double sided eqns
65. T/f Double sided eqns
66. Add it up 4126+5999
67. Add it up 5672+6928
68. Add it up 2369+9872
69. Add it up 8273+7989
70. Add it up 7827+6376
71. Adding hundreds: 695+*=959, 3492+500=*, 600m/t503=*
72. Adding hundreds: 364+*=1264, 426+600=*, 200m/t 236 =*
73. Adding hundreds 562+*=862, 658+200=*, 500m/t 352=*
74. Adding hundreds: 263+*=663, 222+500=*, 600m/t406=*
75. Adding hundreds 462+*=862, 426+300=* 800m/t169=*
76. Give or take a thousand Add 4000 to 2668
77. Give or take a thousand Add 8000 to 7558
78. Give or take a thousand what is 5000 m/t 23669?
79. Give or take a thousand what is 6000 m/t 8331?
80. Give or take a thousand what is 19369 + 3000?
81. Add these three numbers 24+45+16=?
82. Add these three numbers 20+35+16=?
83. Add these three numbers 45+15+14=?
84. Add these three numbers 26+12+22=?
85. Add these three numbers 37+13+18=?
86. Number detectives: Four's no chore - Add 4 clustered numbers
87. Number detectives: Four's no chore - Add 4 clustered numbers
88. Number detectives: Four's no chore - Add 4 clustered numbers
89. Number detectives: Four's no chore - Add 4 clustered numbers
90. Number detectives: Four's no chore - Add 4 clustered numbers
91. Same or different: Click all the boxes with the same answer
92. Same or different: Click all the boxes with the same answer
93. Same or different: Click all the boxes with the same answer
94. Same or different: Click all the boxes with the same answer
95. Same or different: Click all the boxes with the same answer
96. Make 150 70+44+*
97. Make 120 52+37+*
98. Make 140 96+14+*
99. Make 130 75+41+*
100. Make 160 57+33+*
101. T/F double sided: 56+14=35+35, etc
102. T/F double sided: 23+12=65+30, etc
103. T/F double sided: 21+80=92-42, etc
104. T/F double sided: 42+46=19+69
105. T/F double sided: 32+18=25+25
106. Give or Take 10 000 40000+227558
107. Give or Take 10 000 50 000+23 565
108. Give or Take 10 000 40 000+56 780
109. Give or Take 10 000 20 000 + 239 330
110. Give or Take 10 000 50 000+50 332
111. Number detectives: Add 4 clustered tens numbers
112. Number detectives: Add 4 clustered tens numbers
113. Number detectives: Add 4 clustered tens numbers
114. Number detectives: Add 4 clustered tens numbers
115. Number detectives: Add 4 clustered tens numbers
116. Negative Thinking 2 + * = -4
117. Adding the big ones: Write the missing numbers in vertical addition of large whole numbers
118. Adding the big ones: Write the missing numbers in vertical addition of large whole numbers
119. Adding the big ones: Write the missing numbers in vertical addition of large whole numbers
120. Adding the big ones: Write the missing numbers in vertical addition of large whole numbers
121. Adding the big ones: Write the missing numbers in vertical addition of large whole numbers
122. Changing numbers: Addition/subtraction using negative integers
123. Changing numbers: Addition/subtraction using negative integers
124. Changing numbers: Addition/subtraction using negative integers
125. Changing numbers: Addition/subtraction using negative integers
126. Changing numbers: Addition/subtraction using negative integers
127. Make 20 13+-6+*
128. Make 15 3+19+*
129. Make 10 8+7+*
130. Make 20 8+-2+*
131. Make 15 21+-6+*
132. T/F double sided eqn incl -ive #
133. T/F double sided eqn incl -ive #
134. T/F double sided eqn incl -ive #
135. T/F double sided eqn incl -ive #
136. T/F double sided eqn incl -ive #
137. Add these three numbers: 13+-7+3
138. Add these three numbers: 9+2+-3
139. Add these three numbers: 9+8+-5
140. Add these three numbers: 16+-9+2
141. Add these three numbers: 20+-9+11
142. Number detectives: Add 4 clustered hundreds numbers
143. Number detectives: Add 4 clustered hundreds numbers
144. Number detectives: Add 4 clustered hundreds numbers
145. Number detectives: Add 4 clustered hundreds numbers
146. Number detectives: Add 4 clustered hundreds numbers
147. Adding the big ones: Write missing numbers in vertical addition
148. Adding the big ones: Write missing numbers in vertical addition
149. Adding the big ones: Write missing numbers in vertical addition
150. Adding the big ones: Write missing numbers in vertical addition
151. Adding the big ones: Write missing numbers in vertical addition
152. And a Partridge in a pear tree 12+11+10+9, etc
153. Make 13 18+34+*
154. Make -5 27+9+*
155. Make 29 37+20+*
156. Make -8 42+16+*
157. Make 32 29+12+*
158. T/F Double-sided equations
159. T/F Double-sided equations
160. T/F Double-sided equations
161. T/F Double-sided equations
162. T/F Double-sided equations
163. Add these three numbers 84+-11+-16
164. Add these three numbers -19+55+-26
165. Add these three numbers -17+-28+34
166. Add these three numbers -41+-35+47
167. Add these three numbers 46+13+14
168. Detective Duck: Add 4 clustered numbers
169. Detective Duck: Add 4 clustered numbers
170. Detective Duck: Add 4 clustered numbers
171. Detective Duck: Add 4 clustered numbers
172. Detective Duck: Add 4 clustered numbers
173. Adding the big ones: Write missing numbers in vertical additions
174. Adding the big ones: Write missing numbers in vertical additions
175. Adding the big ones: Write missing numbers in vertical additions
176. Adding the big ones: Write missing numbers in vertical additions
177. Adding the big ones: Write missing numbers in vertical additions
178. Make 29: 282 + -184 + *
179. Make 180: 369 + -75 + *
180. Make 126: 34+81 + *
181. Make 79: 104 + -53 + *
182. Make 115: -26 + 180 + *
183. Add 3 numbers: 106 + 24 + -6
184. Add 3 numbers: -72 + 203 + -16
185. Add 3 numbers: -58 + -245 + 10
186. Add 3 numbers: -158 + 101 + 69
187. Add 3 numbers: -36 + -72 + 17
188. Four's no chore: Add 4 clustered numbers
189. Four's no chore: Add 4 clustered numbers
190. Adding the big ones: Write missing numbers in vertical addition
191. Adding the big ones: Write missing numbers in vertical addition
192. Adding the big ones: Write missing numbers in vertical addition
193. Adding the big ones: Write missing numbers in vertical addition
194. Adding the big ones: Write missing numbers in vertical addition
195. Take Tens 541-60=481,924-90=834
196. Take Tens 874-80=481,219-20=199
197. Take Tens 603-10=593,128-50=78
198. Take Tens 459-70=389,816-40=776
199. Take Tens 352-70=282,715-30=685
200. Give or Take Thousands: 260 000 - 5000
201. Give or Take 1000: 1280000 - 4000 = 1276000
202. Give or Take Thousands: 22 000 - 3000
203. Give or Take Thousands: 24 000 - 6000
204. Give or Take Thousands: 15 500 - 2000
205. Give or Take Thousands: 12 000 - 1200
206. 1000s crossing: 5030-4990, 3010-2950, 7970-8040
207. 1000s crossing: 8020-7940, 4030-3950, 9060-8980
208. 1000s Crossing: 6015-5999, 8014-7995, 3024-2990
209. True or False?: 107 - 68 = 41
210. Same or different: Click all boxes with the answer 126
211. Same or different: Click all boxes with the answer 175
212. Same or different: Click all boxes with the answer 426
213. Same or different: Click all boxes with the answer 146
214. Same or different: Click all boxes with the answer 236
215. Same or different: Click all boxes with the answer 567
216. Same or different: Click all boxes with the answer 194
217. Same or different: Click all boxes with the answer 222
218. Same or different: Click all boxes with the answer 468
219. Same or different: Click all boxes with the answer 673