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
41 + 20 = ______
3 × 10 = ______
7 × 10 = ______
61 − 10 = ______
5 × 10 = ______
42 + 20 = ______
6 × 10 = ______
49 + 10 = ______
98 − 10 = ______
18 + 10 = ______
2 × 10 = ______
22 + 10 = ______
43 + 10 = ______
73 + 10 = ______
29 + 20 = ______
4 × 10 = ______
81 − 10 = ______
45 + 20 = ______
58 − 10 = ______
50 + 20 = ______
