W8490PR-Learn from Home Workbook 3

SUBTRACTING NUMBERS MENTALLY
N
Number
1. Subtract one from each of these numbers.
(a) 431 = (b) 307 = (c) 294 = (d) 163 =
(e) 955 = (f) 782 = (g) 549 = (h) 860 =
2. Subtract ten from each of these numbers.
(a) 431 = (b) 307 = (c) 294 = (d) 163 =
(e) 955 = (f) 782 = (g) 549 = (h) 860 =
3. Subtract one hundred from each of these numbers.
(a) 431 = (b) 307 = (c) 294 = (d) 163 =
(e) 955 = (f) 782 = (g) 549 = (h) 860 =
4. Complete these mental subtraction sums.
(a) 293 – 3 = (b) 745 – 4 = (c) 409 – 5 =
(d) 186 – 4 = (e) 517 – 5 = (f) 860 – 9 =
(g) 725 – 8 = (h) 914 – 6 = (i) 345 – 7 =
(j) 576 – 50 = (k) 382 – 10 = (l) 745 – 30 =
(m) 154 – 30 = (n) 697 – 80 = (o) 263 – 20 =
(p) 804 – 90 = (q) 431 – 50 = (r) 936 – 40 =
(s) 595 – 300 = (t) 634 – 400 = (u) 925 – 800 =
Viewing sample
(v) 707 – 500 = (w) 890 – 100 = (x) 721 – 500 =
(y) 684 – 600 = (z) 481 – 200 =
CHALLENGE
Fred has 986 football stickers.
Maria has 200 less. Maria has
stickers.
David has 60 less than Maria. David has
Paula has 50 less than David. Paula has
stickers.
stickers.
Objective
Subtracts ones, tens and hundreds from three-digit numbers.
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