Adding and Subtracting 100s, 10s & 1s
-We are learning to solve subtraction problems by subtracting 100s, 10s and 1s.
-We are learning to solve addition problems by adding 100s, 10s and 1s
Word problems
Adding and Subtracting 100s, 10s & 1s
-We are learning to solve subtraction problems by subtracting 100s, 10s and 1s.
-We are learning to solve addition problems by adding 100s, 10s and 1s
Question | Working | Answer |
475 +158= | E.g. 400 + 100 = 500 70 + 50 = 120 5 + 8 = 13 500 + 120 = 13 = 633 | 633 |
248+139= | 200 + 100 = 300 40 + 30 = 70 8 + 9 = 17 300 + 70 + 17 = 387 | 387 |
487+209= | 400 + 200 = 600 80 + 0 = 80 7 + 9 = 16 600 + 80 +16 = 696 | 696 |
530+276= | 500 + 200 = 800 30 + 70 = 100 0 + 6 = 6 800 + 100 + 6 = 906 | 906 |
302+508= | 300 + 500 = 800 0 + 0 = 0 2 + 8 = 10 800 + 0 + 10 = 810 | 810 |
Question | Working | Answer |
512-109= | 500 - 10 = 490 10 - 0 = 10 2 - 9 = 0 490 + 10 + 0 = 500 | 500 |
643-211= | 600 - 200 = 400 40 - 10 = 30 3 - 1 = 2 400 + 30 + 2 = 432 | 432 |
798-331= | 700 - 300 = 400 90 - 30 = 60 8 - 1 = 7 400 + 60 + 7 = 467 | 467 |
233-99= | 200 - 0 = 200 30 - 90 = 0 3 - 9 = 0 200 + 0 + 0 = 200 | 200 |
321-177= | 300 - 100 = 200 20 - 70 = 0 1 - 7 = 0 200 + 0 + 0 = 200 | 200 |
Word problems
Problem | Working and answer |
Mr Huges has to update his internet usage at home. He is currently on ADS to unlimited broadband ss Tuiā had $833 and she spent $245 at K-mart. How much money does Miss Tuiā have left? | $833 - $245 = $610 $800 - $200 = $600 $40 - $30 = $10 $3 - $5 =$0 $600 + $10 + $0 = $610 |
Pt England bakery baked 174 cookies in the morning and another batch of 289 cookies in the afternoon. How many cookies did they bake altogether? | 174 + 289 = 463 100 + 200 = 300 70 + 80 = 150 4 + 9 = 13 300 + 150 + 13 = 463 |
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