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
89 − 10 = ______
98 − 10 = ______
68 − 10 = ______
60 + 10 = ______
87 + 20 = ______
3 × 10 = ______
8 × 10 = ______
79 + 20 = ______
41 + 10 = ______
1 × 10 = ______
32 + 20 = ______
97 − 10 = ______
81 + 10 = ______
4 × 10 = ______
9 × 10 = ______
61 + 20 = ______
2 × 10 = ______
78 + 10 = ______
65 + 20 = ______
42 + 20 = ______
