NAME ____________________________________ DATE __________________
ACTIVITY
1 Solve these problems. Fill in the totals on the 400 chart below.
306 + 10 = __________
326 + 10 = __________
359 − 10 = __________
390 − 10 = __________
319 − 10 = __________
337 + 10 = __________
361 + 10 = __________
372 − 10 = __________
310 + 10 = __________
343 − 10 = __________
378 − 10 = __________
395 − 10 = __________
2 Fill in the other missing numbers on the 400 chart.
d