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
23 + 20 = ______
26 − 10 = ______
5 × 10 = ______
45 + 20 = ______
45 + 10 = ______
96 − 10 = ______
63 + 20 = ______
70 + 20 = ______
33 − 10 = ______
71 + 20 = ______
2 × 10 = ______
70 + 10 = ______
61 − 10 = ______
45 − 10 = ______
81 + 10 = ______
48 + 10 = ______
49 − 10 = ______
9 × 10 = ______
36 + 20 = ______
4 × 10 = ______
