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Addition and subtraction
Mathematics exercise 1

Mathematics exercise 1

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. Finish the sequences:

350, 351, 352, , , , .

703, 702, 701, , , , .

632, 634, 636, , , , .

293, 295, 297, , , , .


2. Calculate:

845 + 33 =

845 - 33 =

632 + 29 =

665 - 13 =

187 - 68 =

450 + 49 =

175 + 19 =

246 + 45 =

850 - 36 =

884 - 79 =


3. Fill in the missing numbers:

243 + = 258

345 + = 362

+ 756 = 788

438 - = 422

555 - = 523

- 20 = 500