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
41 + 20 = ______
68 − 10 = ______
44 − 10 = ______
39 − 10 = ______
3 × 10 = ______
42 + 20 = ______
2 × 10 = ______
6 × 10 = ______
33 + 10 = ______
30 + 10 = ______
4 × 10 = ______
83 + 20 = ______
5 × 10 = ______
29 + 10 = ______
63 + 10 = ______
51 + 20 = ______
66 + 20 = ______
78 − 10 = ______
85 + 20 = ______
27 − 10 = ______
