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 + 20 = ______
3 × 10 = ______
24 + 20 = ______
6 × 10 = ______
31 + 20 = ______
5 × 10 = ______
1 × 10 = ______
80 + 20 = ______
32 − 10 = ______
9 × 10 = ______
98 − 10 = ______
7 × 10 = ______
60 + 10 = ______
21 + 20 = ______
83 + 10 = ______
86 + 10 = ______
34 + 20 = ______
55 + 10 = ______
77 + 20 = ______
23 − 10 = ______
