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
92 − 10 = ______
52 + 20 = ______
50 − 10 = ______
61 − 10 = ______
21 − 10 = ______
5 × 10 = ______
29 + 10 = ______
74 − 10 = ______
33 + 20 = ______
62 − 10 = ______
27 + 20 = ______
88 + 10 = ______
20 + 10 = ______
9 × 10 = ______
20 + 20 = ______
88 + 20 = ______
6 × 10 = ______
42 − 10 = ______
64 + 20 = ______
94 − 10 = ______
