Grade 4 Mathematics Online Lessons on Mass

Grade Four Mathematics Online Lessons on Mass
1. Measuring mass in kilograms
2. Measuring mass using 1/2 kg masses
3. Measuring mass using 1/4 kg masses
4. Mass in 1/2 kilograms and 1/4 kilograms
5. Addition of mass in kilograms
6. Subtraction of mass in kilograms

Lessons (21)     SHARE

• 1.    Complete the table below: Number of ½ kg masses
  1m 47s

• 2.    Complete the table below: Number of #1/4# kg masses
  1m 51s

• 3.    How many ½ kg packets can be obtained from: a) 4 kg of sugar b) 6 kg of wheat
  1m 24s

• 4.    How many #1/4# kg packets can be obtained from: a) 4 kg of salt? b) 6 kg of millet
  1m 42s

• 5.    How many kilograms of sugar are there in six #1/4# kg packets of rice?
  1m 32s

• 6.    Kerubo bought six kilograms of beans. She packed the beans in ½ kg packets. How many packets did she get?
  1m 28s

• 7.    Mbui packed two kilograms of groundnuts in #1/4# kg packets. How many packets did he get?
  1m 20s

• 8.    A business woman had 8 kg of sorghum. She packed the sorghum in ½ kg packets. How many packets did she get?
  1m 26s

• 9.    Mwilu had twelve ¼ kg packets of salt. How many kilograms of salt did he have?
  1m 26s

• 10.    Keziah bought eighteen ½ kg tins of cooking fat. How many kilograms of cooking fat did she buy?
  1m 51s

• 11.    Work out: add kilograms
  1m 1s

• 12.    Work out: (adding mass in kilograms)
  1m 15s

• 13.    Work out: a) 45 kg + 60 kg b) 59 kg + 84 kg
  1m 9s

• 14.    Work out: a) 144 kg + 98 kg b) 2460 kg + 540 kg
  1m 11s

• 15.    Lang’at bought 125 kg of maize. Ahmed bought 180 kg of maize. How many kilograms of maize did they buy altogether?
  1m 1s

• 16.    Kungu bought 329 kg of rice. Njeri bought 465 kg of rice. How many kilograms of rice did they buy altogether?
  1m 10s

• 17.    Sekunda bought 1354 kg of fertilizer in March. In April he bought 895 kg of fertilizer. How many kilograms of fertilizer did he buy altogether?
  1m 24s

• 18.    Work out: subtract kilograms
  0m 57s

• 19.    Work out: subtracting kilograms
  1m 47s

• 20.    Mutai had 85 kg of fish. He sold 69 kg of the fish. How many kilograms of the fish remained?
  1m 17s

• 21.    A trader had 850 kg of onions. She sold 575 kg of the onions. How many kilograms of onions remained?
  1m 38s

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