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
69 − 10 = ______
79 + 20 = ______
4 × 10 = ______
25 + 20 = ______
42 + 20 = ______
74 − 10 = ______
43 − 10 = ______
64 − 10 = ______
29 − 10 = ______
87 + 10 = ______
56 + 10 = ______
55 − 10 = ______
12 + 20 = ______
23 + 10 = ______
42 + 10 = ______
22 + 20 = ______
14 + 10 = ______
12 + 10 = ______
88 − 10 = ______
83 + 20 = ______
