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• Abacus numbers • • 4-spike abacus, • Place values • • • • • • •
9 beads
You could work with a friend to do these.
Use a 4-spike abacus and 5 beads for each number you make. a c

rn

W Write in figures: rn
a 5 and 5000
a ten thousand b eight thousand, one hundred
a nine thousand and
b 3002, 3011 , 3020, c seven thousand and four d five thousand and thirty fifty-five
3101, 3110, 3200 OJ Find and record answers to these. e nine thousand f seven hundred and two
c any six from: 1004, a The smallest and largest numbers possible. 00 Copy. Write > or <, between each pair: b seven thousand
nine hundred and
1022, 1040, 1112, b Six 4-digit numbers between 3000 and.4000. a 8254 8245 b 6004 6404 c 7101 7110
thirty-nine
1130, 1202, 1220, c Six even 4-digit numbers between 1000 and 2500. rn
1310, 1400, 2012, Write a 4-digit number which has a: c ten thousand
d Three odd 4-digit numbers between 2000 and 3000. a seven in the thousands column b three in the ones column
2030, 2102, 2120,
2210.2300 e Numbers made by putting beads c one in the tens column d nine in the hundreds column. [gJ
on the 2 left-hand spikes only.
~ Write the number which is 100 less than:
d any three from: f Numbers with a 4 in them in ascending order.
a 7000 b 5555 c 7111 d 9023 e 10 000. a 10000 b 8100
2003,2021,2111,
2201 CHALLENGE lEl c 7004 d 5030
Use 9 beads and find Write the number which is 1000 more than: e qOOO f 702
e 1400,2300,3200, twelve numbers> 6000. a 9000 b 7888 c 6367 d 19
4100 For examPlellll' L/-.--~
CHALLENGE 00
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f 14, 41, 104, 140, Record them on a diagram like th:.~ You can make 24 different 4-digit numbers -
using these once each time:
401 , 41 0, 1 004, Th H T V True or false? Investigate. a 8254 > 8245
1040, 1400, 4001, b 6004 < 6404
4010,4100 EJ c 7101 < 7110

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Challenge Challenge
a 7 123 b 8763 c 78 16 d Iq23 True
odd numbers> 6000 even numbers> 6000
(Only the bold figures are important.) 7542 5742 4752 2754
6003,6021,6111,6201 6012,6030,6102,6120 7524 5724 4725 2745
~ 7245 5247 4527 2547
70 11, 71 0 1 , 8001 6210,6300,7002,7020,7110,7200, 7254 5274 4572 2574
8010, 8100,qOOO a 6QOO b 5455 c 7011 7425 5427 4275 2457
d 8Q23 e QQOO 7452 5472 4257 2475

~

a 10000 b 8888 c 7367
d 101Q e 1107