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Thursday 7 June 2018

Adding 100s, 10s and 1s

Adding 100s, 10s and 1s
-We are learning to solve addition problems by adding 100s, 10s and 1s.

Question
Adding 100s
Adding 10s
Adding 1s
Answer
145+254=399
100+200=300
40+50=90
5+4=9
300+90+9=399
643+235=878
600 + 200 = 800
40 + 30 = 70
3 + 5 = 8
800+70+8=878
727+65=786
700 + 0 = 700
20 + 60 = 80
7 + 5 = 11
700+80+11=786
639+347=986
600 + 300 = 900
30 + 40 = 70
9 + 7= 16
900+70+16=986
373+82=455
300 + 0 = 300
70 + 80 = 150
3 + 2 = 5
300+150+5=455
642+298=940
600 + 200 = 800
40 + 90 = 130
2 + 8 = 10
800+130+10=940
587+465=1052
500 + 400 = 900
80 + 60 = 140
7 + 5 = 12
900+140+12=1052
754+76=830
700 + 0=700
50 + 70 = 120
4 + 6 = 10
700+120+10=830
467+276=
400 + 200 = 600
60 + 70 = 130
7 + 6 = 13
600 + 130 + 13 =743
399+764=
300 + 700 = 1000
90 + 60 = 150
9 + 4 = 13
1000+150+13=163

Word problems
Problem
Working and answer
There were 167 Sandwiches at the bakery. The baker made another 58 sandwiches. How many sandwiches are there altogether?
167 + 58 = 225
100 + 0 = 100
60 + 50 = 110
7 + 8 = 15
100 + 110 + 15 = 225
Pt England school has 219 Rugby balls and 178 Netballs. How many balls does the school have?
219 + 178 = 397
200 + 100 = 300
10 + 70 = 80
9 + 8 = 17
300 + 80 + 17 = 397
AJ read the first 243 of a book. There 159 pages left to read. How many pages does the book have?
243 + 159 = 402
200 + 100 = 300
40 + 50 = 90
9 + 3 = 12
300 + 90 + 12 = 402
There are 329 people sunbathing on the beach. There are another 164 people swimming in the water. How many people are there in total?
329 + 164 =493
300 + 100 = 400
20 + 60 = 80
4 + 9 = 13
400 + 80 + 13 = 493
Laura's coffee shop sold 212 cups of coffee on Monday. They sold another 98 cups on Tuesday. How many cups did the shop sell on both days combined?
212 + 98 = 310
200 + 0 = 200
10 + 90 = 100
2 + 8 = 10
200 + 100 + 10 = 310
There were 295 people riding on a train. 127 more people got on at the next station. How many people were riding the train then?
295 + 127 =
200 + 100 = 300
90 + 20 + 110
5 + 7 = 12
300 + 110 + 12 =422

A Guide to being kind

Wednesday 6 June 2018

Adding and Subtracting 100s, 10s and 1s


Adding and Subtracting 100s, 10s and 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
199+188=234
100 + 100 = 200
90 + 80 = 170
9 + 8 17
199 + 188 234
234
634+197=831
600 + 100 = 700
30 + 90 = 120
4 + 7 = 11
634 + 197 =831
831
188+189=377
100 + 100 = 200
80 + 80 = 160
8 + 9 = 17
188 + 189 = 377
377
299+156=455
200 + 100 + 300
90 + 50 =140
9 + 6 =15
299 + 156 = 455
455

Question
Working
Answer
482-394=88
400 - 300 = 100
80 - 90 = 10
2 - 4 =  2
482 - 394 = 88
88
531-198=33
500 - 100 = 400
30 - 90 =60
1 - 8 = 7
531 - 198 = 333
333
535-379=
500 - 300 = 200
30 - 70 = 40
5 - 9 = 4
535 - 379 =244

933-399=534
900 - 300 = 600
30 - 90 = 60
3 - 9 = 6
933 - 399 = 534
534
221-177=44
200 - 100 - 100
20 - 70 = 50
7 - 1 =6
221 - 177 = 44
44

Word problems
Problem
Working and answer
Miss Davis had $833 she spent $245 at the supermarket. How much money does Miss Davis have left?
$833 - $245  = 588
800 - 200 = 600
30 - 40 = 10
3 - 5 = 2
The bakery made 174 cookies in the morning and they made another 289 cookies in the afternoon. How many cookies did they made that day?
174 + 289 = 463 cookies
100 + 200 = 300
70 + 80 = 170
4 + 9 = 13
There are 374 children at the park. 198 children leave. How many children are left at the park?
374 - 198 =176
300 - 100 = 200
70 - 90 = 20
4 - 8 = 4