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\Practical problem solving Write the numbers. How fast can you figure out the answers? Try to write the answers before you hear them

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Exercise 11: Practical problem solving

Write the numbers. How fast can you figure out the answers? Try to write the answers before you hear them. 23. MP3

Example:

1 23 + 47 = 70
2 62 + 17 = 79
3 281 + 54 = 335
4 512 + 33 = 545
5 24 x 5 = 120
6 70 ÷ 4 = 280
7 28 ÷ 7 = 4

8 54 ÷ 6 = 9
9 _____
10 _____
11 _____
12 _____