17 x 2☐ = 44☐
988 x 2☐ = 2☐700
2☐6 x ☐61 = 11☐016
☐9 x 1☐8 = 31☐2
☐22 x 5☐9 = 27☐138
1☐82 x ☐95 = 82☐290
Each red box represents a missing digit.
Can you find out what they are?
Topics: Starter | Arithmetic | Problem Solving
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17 x 26 = 442
988 x 25 = 24700
256 x 461 = 118016
29 x 108 = 3132
522 x 529 = 276138
1382 x 595 = 822290
Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments:
However it would be better to assign one of the student interactive activities below.
The 1st December is the date to start opening the doors of the 2023 Mathematics Advent Calendar.