Lesson 4 Step Subtraction Crossing 10 2 Fluency

Lesson 4 Step: Subtraction – Crossing 10 (2)

Fluency Complete the number sentences. 11 counters. First there were _______ 6 counters were taken away. Then _______ Now there are _______5 counters. 11 - 6 = 5

Fluency Complete the number sentences. 15 counters. First there were _______ 7 counters were taken away. Then _______ Now there are _______8 counters. 15 - 7 = 8

Fluency Complete the number sentences. 14 counters. First there were _______ 8 counters were taken away. Then _______ Now there are _______6 counters. 14 - 8 = 6

Fluency Complete the number sentences. 18 counters. First there were _______ 9 counters were taken away. Then _______ Now there are _______9 counters. 18 - 9 = 9

Fluency Complete the number sentences. There are 15 cars. 15 8 of them are blue. How many are red? _______7 15 - 8 = 7

Fluency Complete the number sentences. There are 17 jumpers. 17 9 of them are blue. _______ 8 of them are red. 17 - 8 = 9

Fluency Complete the number sentences. There are 12 candles. 12 5 of them are blue. _______ 7 of them are red. 12 - 7 = 5

Fluency Complete the number sentences. 17 building blocks. There are _______ 8 of them are blue. _______ 9 of them are red. _______ 17 - 8 = 9 17

Fluency Complete the number sentences. 11 counters. There are _______ 11 3 of them are blue. _______ 8 of them are red. _______ 11 - 3 = 8

Reasoning The three representations below represent 14 minus 5. Spot and explain the mistake. 14 There are 14 counters. 5 of them are blue. 9 of them are red. 14 - 5 The part-whole model shows 9 blue and 5 red counters. It should show 5 blue and 9 red counters. = 9

Complete the part-whole model to represent the subtraction. 15 What other ways can you show the subtraction? Problem solving