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1) Find: 7000 – 888
2) Find 50,000 – 23
3) 1 – 0.357 =
4) Write 17 in bar number form so that there are no digits over 5.
5) Write 267 in bar number form so that there are no digits over 5
6) Write 1919 in bar number form so that there are no digits over 5.
7) Which of these are equivalent to 189 (more than one answer here):
8) Which of these are equivalent to 73 (more than one answer here)
9) Find, using bar numbers: 431 – 183
10) The intermediate step when using bar numbers to find 5346 – 1839 is:
11) Find, using number splitting: 4768 + 1817
12) Find, using number splitting: 5346 – 1839
13) Find 2314 x 11
14) Find 686 x 11
15) Which is the best method to find 36 x 22:
16) Which of these is the best method to find 36 x 23
17) Find 2/3 – 1/7
18) For fractions a/b and c/d which is the way to find the numerator of a/b – c/d:
19) Which is greatest: 4/5, 5/7, 7/9, 8/11