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
70 + 20 = ______
6 × 10 = ______
1 × 10 = ______
3 × 10 = ______
7 × 10 = ______
42 + 20 = ______
97 − 10 = ______
33 + 10 = ______
68 − 10 = ______
83 − 10 = ______
63 + 20 = ______
4 × 10 = ______
5 × 10 = ______
87 − 10 = ______
44 + 20 = ______
56 − 10 = ______
24 + 10 = ______
90 − 10 = ______
80 − 10 = ______
17 + 10 = ______
