Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
64 + 20 = ______
98 − 10 = ______
80 + 10 = ______
52 + 10 = ______
4 × 10 = ______
40 + 20 = ______
38 + 20 = ______
21 − 10 = ______
67 − 10 = ______
5 × 10 = ______
8 × 10 = ______
71 + 20 = ______
54 − 10 = ______
42 − 10 = ______
65 − 10 = ______
2 × 10 = ______
17 + 20 = ______
60 − 10 = ______
1 × 10 = ______
3 × 10 = ______
