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
80 + 20 = ______
9 × 10 = ______
20 + 10 = ______
98 − 10 = ______
6 × 10 = ______
25 − 10 = ______
3 × 10 = ______
79 + 10 = ______
4 × 10 = ______
5 × 10 = ______
34 − 10 = ______
1 × 10 = ______
73 + 20 = ______
79 − 10 = ______
51 − 10 = ______
44 + 20 = ______
66 + 20 = ______
46 + 20 = ______
33 + 10 = ______
33 + 20 = ______
