Year 5 Place Value 11 Negative numbers Negative

Year 5 Place Value 11. Negative numbers

Negative numbers How far can you count backwards in 1 s? 5, 4, 3… How far can you count backwards in 2 s? 10, 8, 6… How far can you count backwards in 5 s? 15, 10, 5… I can count backwards through zero. I can count in intervals through zero. I can use negative numbers in context.

Negative numbers What are the temperatures? 5° 10° 30° 0° 0° -3° -6° 0° -10° I can count backwards through zero. I can count in intervals through zero. I can use negative numbers in context.

Negative numbers What are the differences in temperatures? 6° 10° 30° 0° 0° -3° -6° 0° -10° 9° I can count backwards through zero. 16° I can count in intervals through zero. 40° I can use negative numbers in context.

Negative numbers Estimate where these numbers go on the number line. 0° -10° 12° -20° -30° I can count backwards through zero. 30° I can count in intervals through zero. I can use negative numbers in context.

Negative numbers Put these numbers in ascending order. -16 0 I can count backwards through zero. -9 7 I can count in intervals through zero. -3 15 I can use negative numbers in context.

Negative numbers The temperature inside the plane is 20° and outside is -25°. Use a number line to show the difference in temperature. -25° 0° 20 + 25 = 45° I can count backwards through zero. I can count in intervals through zero. 20° I can use negative numbers in context.

Negative numbers If I have £ 128 in my bank account but spend £ 350, how much will I be in debt? £ 350 ? £ 0 £ 128 - £ 350 = -£ 222 I can count backwards through zero. I can count in intervals through zero. £ 128 I can use negative numbers in context.

Negative numbers The temperature at 8 am in London was 4°. By 12 pm it had risen by 13°. By midnight it had dropped again by 23°. What was the temperature at midnight? 4° + 13° = 17° - 23° = -6° I can count backwards through zero. I can count in intervals through zero. I can use negative numbers in context.

Activity 1 Copy and complete the number tracks. Put these numbers in ascending order. -5 5 Put these numbers in ascending order. 8 0 2 -2 1 Activity 3 Write the missing temperatures. Find the difference in each. 0 Copy and complete the number tracks. Activity 2 -1 Copy and complete the number tracks. Activity 1 5 -12 -7 -4 -2 Put these numbers in ascending order. 2 Activity 3 Write the missing temperatures. Find the difference in each. -1 Activity 4 A) Steve has £ 135 in his bank account and spends £ 256. How much is he in debt? B) The temperature in Liverpool drops by 32° to -17°. What was the original temperature? 0 -2 2 Activity 3 Write the missing temperatures. Find the difference in each. Activity 4 A) Joe jumps off a 10 m cliff into the sea and goes 15 m under the water. How far did he travel? B) The temperature in London is 15° in the day and then -8° at night. How much did the temperature drop? 12 1 A) The temperature in Leeds drops 16° over night and then rises 12° to 9° the next morning. What was the original temperature? B) Sam has £ 109 in his account. He must pay three bills. Gas £ 47, electric £ 124 and water £ 82. How much is he in debt?

Activity 1 A) -3, 2, -1, 0, 1, 2, 3, 4 Activity 1 A) -30, -20, -10, A) -32, -24, -16, -8, 0, 10, 20, 30, 40 0, 8, 16, 24, B) -8, -6, -4, -2, 0, 2, 4, 6 B) -60, -48, -36, -24, B) -8, -6, -4, -2, 0, 2, 4, 6 C) -15, -10, -5, 0, 5, 10, 15, 20 -20, -15, -10, -5, 0, 5, 10 -5, -2, -1, 0, 1, 2, 5 Activity 2 Activity 3 -7, -4, -2, 0, 2, 5, 8 -20°/ 30° B) -15°/ 24° C) -8°/ 16° A) A) Activity 3 25 m B) 23° A) -12, 0, 12, 24 C) -25, Activity 2 -4°/ 7° B) -20°/ 80° C) -25°/ 40° Activity 1 -£ 121 B) 15° A) C) -9, -6, -3, 0, 3, 6, 9, 12 Activity 2 -12, -1, 0, 1, 2, 12 Activity 3 -10°/ 15° B) -75°/120° C) -40°/ 64° A) Activity 3 13° B) -£ 144 A)

Keywords Reflection – Traffic Lights Where did I get to today? I can now. . . I need more practice with… I still need to learn how to. . . …count backwards through zero. …count in intervals through zero. …use negative numbers in context.