1 Drawbase 10 to complete thepart-wholemodel.
Complete the sentences.
There are
tensand ones.
The whole is
+ =
2 Complete the sentences todescribeeachnumber.
a) 39 has tensand ones.
b) 70 has tensand ones.
c) 12 has tenand ones.
d) 56 has tensand ones.
3 Complete thenumber sentences todescribeeachnumber.
Thefirstonehasbeendone for you.
a) 39= 30 + 9
b) 70= +
4 Dexterhas30 sweetsandDorahas28 sweets.
Represent the total numberof sweets:
• usingbase10
• asapart-wholemodel
• asanumber sentence.
5 Complete thepart-wholemodels.
Write fournumber sentences tomatch eachpart-wholemodel.
a) b)
Tens and ones using addition
©WhiteRoseMaths2019
c) 12= +
d) 56= +
27
7
46
16
6 Complete thenumber sentences.
a) 35=30+ e) 19+ 20=
b) 20+ = 29 f) 67= 50+
c) 42=2+ g) 99= + 39
d) 50+7= h) 40+ 30+ = 81
7 Annie thinks that50+ 9= 509
Show thatAnnie is wrong.
HowwouldyouhelpAnnie toget it right next time?
Talkabout it withapartner.
8 Complete thenumber sentence.
30+ = 20+
Compareyouranswerwithapartner’sanswer.
Howmany differentways can you complete the
number sentence?
Tens and ones using addition
©WhiteRoseMaths2019
3 Complete thenumber sentences todescribeeachnumber.
The first onehasbeen done foryou.
a) 39 = 30 + 9
b) 70 = +
4 Dexterhas30 sweetsand Dorahas28 sweets.
Represent the totalnumberof sweets:
• usingbase10
• asapart-whole model
• asanumber sentence.
5 Complete thepart-whole models.
Write fournumber sentences tomatcheachpart-wholemodel.
a) b)
c) 12= +
d) 56= +
27
7
46
16
