Grade 1 · Set A · Side 1 of 2
The missing part
A
Start Finish
Goal: 10 min for both sides
Score/ 48
Remember: A whole is two parts. Find the part that is missing.
15 + = 8
27 − 4 =
3 + 3 = 9
4 + 2 = 8
59 − 4 =
68 − 6 =
78 − 7 =
82 + = 9
910 − 5 =
10 + 1 = 3
118 − 5 =
129 − 5 =
135 − 2 =
141 + = 10
15 + 1 = 4
167 + = 9
1710 − 6 =
187 − 6 =
196 + = 10
20 + 2 = 9
219 − 3 =
2210 − 3 =
234 + = 6
243 + = 10
Grade 1 · Set A · Side 2 of 2
The missing part
A
Start Finish
Goal: 10 min for both sides
Score/ 48
252 + = 7
264 + = 9
278 − 3 =
289 − 8 =
299 − 2 =
303 − 1 =
316 − 5 =
327 − 5 =
335 − 3 =
34 + 5 = 7
351 + = 3
368 + = 9
378 − 4 =
389 − 6 =
391 + = 4
407 + = 8
41 + 2 = 5
4210 − 7 =
433 + = 6
444 + = 7
452 + = 4
46 + 7 = 10
476 − 3 =
486 + = 8
Answer key · Grade 1 · Set A
The missing part
13
23
36
46
55
62
71
87
95
102
113
124
133
149
153
162
174
181
194
207
216
227
232
247
255
265
275
281
297
302
311
322
332
342
352
361
374
383
393
401
413
423
433
443
452
463
473
482
Mark each answer, count the right ones and write the score on the sheet. Beat your own time next time.