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
72 + 10 = ______
28 + 20 = ______
95 − 10 = ______
30 − 10 = ______
51 − 10 = ______
40 + 20 = ______
36 + 10 = ______
2 × 10 = ______
24 + 20 = ______
4 × 10 = ______
79 − 10 = ______
9 × 10 = ______
90 − 10 = ______
38 + 20 = ______
34 − 10 = ______
71 − 10 = ______
6 × 10 = ______
1 × 10 = ______
39 + 10 = ______
63 − 10 = ______
